Top CRO Resources: Courses, Books, Blogs & Experts
- A complete CRO learning path mixes a structured course, a few foundational books, specialist blogs and practitioners to follow.
- The CXL Conversion Optimization program is an advanced, self-paced training with a final exam and certification, while the Udemy course is a low-cost introduction.
- Good CRO books are not only about CRO: Black Box Thinking, Demand-Side Sales 101 and The Innovator's Dilemma teach the experimentation mindset and customer motivation behind good tests.
- The Analytics-Toolkit blog and Tom van den Berg's CRO Weekly are strong sources for the statistics side of A/B testing.
- Analytics skills are a prerequisite for CRO, and the Analytics Mania and MeasureSchool YouTube channels teach GA4 and Google Tag Manager for free.
The best resources for learning A/B testing and conversion rate optimization (CRO) are a mix of structured courses, foundational books, specialist blogs, practitioners who share their work, and free video tutorials for the analytics skills CRO depends on. This guide lists 4 courses, 6 books, 7 blogs, 10 experts to follow on LinkedIn and 3 YouTube channels, with who each one is best for.
Finding high-quality resources in a specialized field like CRO can be challenging. There is an overwhelming number of options, and it is difficult to know which ones are worth your time. Whether you are a marketer, a business owner or a researcher who wants to improve website performance, knowing where to start makes all the difference.
Looking for software rather than learning material? See our guide to CRO tools. For the numbers to track once you start testing, read CRO metrics, and for applying CRO beyond the website, CRO marketing.
How we selected these CRO resources
- Up to date: it reflects current strategies and techniques.
- Relevant: it focuses on the core principles of A/B testing and CRO.
- Insightful: it offers unique perspectives and practical applications.
| Resource type | What it gives you | Use it when |
|---|---|---|
| Courses | A structured path, exercises and often a certificate | You want to build skills in order, from research to testing |
| Books | The thinking behind experimentation and customer behavior | You want frameworks that do not go out of date |
| Blogs | Case studies, new techniques and deep dives on single topics | You want to stay current or solve a specific problem |
| Experts on LinkedIn | Practitioners' opinions, test ideas and industry discussion | You want a steady feed of real-world lessons |
| YouTube channels | Step-by-step video tutorials, mostly on analytics and tracking | You need to set up or debug the data CRO relies on |
Top CRO courses
1. Omniconvert Academy: Customer Value Optimization (CVO) Course
The Customer Value Optimization (CVO) Course by Omniconvert Academy is a program for businesses and marketers who want sustainable growth through CRO and customer lifetime value (CLV) strategies. It teaches frameworks to acquire and retain loyal customers, and it emphasizes aligning business goals with a customer-centric approach. Lessons are taught by international eCommerce experts, including Valentin Radu and Bob Moesta, and graduates receive a CVO Expert Certification.
Best for: marketers and CRO specialists who want to master customer lifecycle management; business owners who want data-driven retention strategies; intermediate to advanced learners ready for RFM segmentation, A/B testing and growth loops.
Key topics: customer lifetime value and its impact on growth; A/B testing to optimize the user experience; step-by-step RFM segmentation for personalized marketing; Jobs to be Done and customer research.
Price: $999.
2. Udemy: The Complete Conversion Optimization Course
The Complete Conversion Optimization Course on Udemy covers the end-to-end conversion optimization process: website usability, user psychology, A/B testing and analytics. Video lessons, quizzes and exercises help learners apply what they learn to real websites, and the course has been updated to include AI for CRO.
Best for: beginner to intermediate marketers who need a solid foundation; entrepreneurs and eCommerce owners who want actionable steps to improve online sales; CRO specialists who want to strengthen testing and data-driven decisions.
Key topics: website usability and UX basics; how to run A/B tests and interpret results; user behavior and psychology; analytics to measure and optimize performance.
Price: Udemy prices vary and discounts are frequent, so check the course page. Purchase includes lifetime access.
3. CXL: Conversion Optimization Program
The Conversion Optimization Program by CXL is an advanced, in-depth training for professionals who want to master CRO. It is organized in tracks of on-demand video courses taught by industry practitioners, with assignments and a final exam, and it covers research, analytics, UX, psychology, testing and program design. Graduates receive a CXL certification they can add to LinkedIn.
Best for: experienced marketers and CRO specialists; UX designers and analysts who want a data-driven approach; eCommerce and SaaS business owners who want to optimize their funnels.
Key topics: conversion frameworks and heuristic analysis; segmentation and personalization; designing and running A/B tests; using customer insights to drive growth.
Price: $999 for the program. CXL also sells subscriptions that include its full course library.
4. Growth Tribe: Conversion Rate Optimisation Certificate
The Conversion Rate Optimisation Certificate by Growth Tribe is a practical, self-paced program focused on applying CRO to real situations. Participants learn to understand user behavior, run experiments and use data to improve conversions, and they receive a certificate on completion.
Best for: intermediate marketers (ambitious beginners are welcome); data-driven professionals who want to combine behavioral science and analytics; eCommerce and marketing teams that want to upskill together.
Key topics: the CRO process and conversion goals; qualitative and quantitative research; setting up GA4, Google Tag Manager and Hotjar; conversion copywriting and design; A/B testing and hypothesis validation; landing page optimization with the LIFT model.
Price: €995, with a monthly installment option.
Top CRO books
1. CLV Revolution: Transform Your Business with Customer Value Optimization
Author: Valentin Radu, founder and CEO of Omniconvert. CLV Revolution shows how businesses can move from short-term sales tactics to sustainable growth by using customer lifetime value. It gives eCommerce businesses a step-by-step framework to understand and optimize customer behavior, supported by case studies and practical strategies.
Best for: eCommerce professionals moving from transactional to customer-centric models; marketers and CRO specialists who want to improve retention and ROI; growth strategists interested in customer behavior and loyalty metrics.
Key topics: what CLV is and why it matters; data-driven retention and loyalty strategies; frameworks for customer value optimization campaigns; real-world examples.
2. Black Box Thinking: The Surprising Truth About Success
Author: Matthew Syed, award-winning journalist and best-selling author. Black Box Thinking explains why learning from failure leads to success. With examples from aviation, healthcare and sports, Syed shows why some organizations thrive by building a culture of openness and continuous improvement, and why experimentation is key to innovation.
Best for: business leaders who want a culture of continuous learning; marketers and experimentation teams; CRO and A/B testing professionals who want the philosophy of iterative testing.
Key topics: the role of failure in success; case studies from aviation and healthcare; experimentation and a growth mindset; systems that encourage learning.
3. Demand-Side Sales 101: Stop Selling and Help Your Customers Make Progress
Author: Bob Moesta, co-creator of the Jobs-to-be-Done theory. Demand-Side Sales 101 redefines selling around the customer's perspective and the progress they want to make. Grounded in the Jobs-to-be-Done methodology, it gives practical tools for understanding why people buy. For how to apply the method, see our guide to Jobs to be Done interviews.
Best for: sales professionals and marketers who want to understand customer behavior; founders designing products around customer progress; CRO specialists who want customer-centric hypotheses.
Key topics: demand-side sales and Jobs-to-be-Done theory; identifying customer progress and unmet needs; guiding customers through decisions; real-world applications.
4. The Innovator's Dilemma
Author: Clayton M. Christensen, business theorist and Harvard Business School professor. The Innovator's Dilemma explores why successful companies often fail when they face disruptive innovation. Christensen introduces the concept of disruptive technologies and gives a framework for spotting disruptive opportunities while protecting the existing business.
Best for: business leaders and entrepreneurs; CRO professionals and strategists who want to stay competitive; marketers and product developers looking for new opportunities.
Key topics: disruptive innovation and its effect on industries; how established companies avoid failure; balancing core operations with innovation; examples from the disk drive and other industries.
5. Converted: The Data-Driven Way to Win Customers' Hearts
Author: Neil Hoyne, Chief Strategist at Google. Converted teaches businesses how to use data to build meaningful relationships with customers. Drawing on his work in customer analytics, Hoyne covers understanding customer behavior, personalizing experiences and driving long-term loyalty by combining data with empathy.
Best for: marketers and CRO specialists who use data to improve conversion and retention; business owners improving customer journeys; analysts who turn customer data into strategy.
Key topics: interpreting customer data for insights; personalization at scale; building loyalty with data-informed decisions; balancing analytics with emotional intelligence.
6. Conversion Optimization: The Art and Science of Converting Prospects into Customers
Authors: Khalid Saleh and Ayat Shukairy, co-founders of Invesp. Conversion Optimization is a practical guide to CRO that combines frameworks with applications. The authors share their methodology, focused on data-driven decisions and customer-centric strategy, with examples and case studies across digital touchpoints.
Best for: marketers and CRO specialists refining their process; eCommerce entrepreneurs turning visitors into customers; UX designers and analysts optimizing user journeys.
Key topics: principles and psychology of conversion optimization; analyzing website performance and user behavior; planning A/B and multivariate tests; real-world optimization projects.
Top CRO blogs
1. Conversion Sciences blog
The Conversion Sciences blog publishes science-backed CRO advice from a team with years of optimization experience, led by founder Brian Massey. It covers A/B testing, user psychology, landing page optimization and data analysis, with practical articles businesses can apply right away.
Best for: marketers and CRO professionals who want advanced strategies; business owners who want data-driven growth. Key topics: landing page and form design; A/B testing and result interpretation; behavioral psychology; analytics tools for CRO.
2. CXL blog
The CXL blog publishes expert-driven articles, how-to guides, case studies and research on conversion optimization, experimentation and digital marketing. The content is practical and advanced, written by practitioners.
Best for: CRO and experimentation professionals; growth marketers; analysts and UX designers. Key topics: experimentation frameworks; CRO case studies; personalization; analytics for decision-making.
3. Conversion Rate Experts: Articles
The Conversion Rate Experts articles come from the CRO consultancy Conversion Rate Experts (CRE). The library spans more than a decade of case studies, win reports and guides, from beginner topics to advanced methods, all built on an evidence-based approach.
Best for: marketers and CRO specialists; business owners looking for proven strategies; readers who want real campaign examples. Key topics: case studies; running A/B tests step by step; landing page and user flow optimization; scaling experimentation; copywriting.
4. Invesp CRO blog
The Invesp blog is written by the team behind Invesp, one of the longest-running CRO agencies. It offers in-depth guides and practical tips on conversion optimization, user behavior analysis and A/B testing, with a strong focus on user psychology.
Best for: optimization specialists; eCommerce and SaaS teams; digital strategists and analysts. Key topics: user behavior and psychology; A/B testing and experiment design; website usability; CRO case studies.
5. Copyhackers blog
The Copyhackers blog teaches conversion copywriting, a critical skill for CRO. Founded by Joanna Wiebe, it shows marketers how to write landing pages, emails and sales pages that convert, with tutorials, data-driven approaches and case studies.
Best for: CRO specialists who want to test better copy; small business owners writing their own marketing; writers and content creators. Key topics: the psychology of persuasive writing; writing sales pages and emails; copywriting case studies; testing and optimizing copy.
6. Tom van den Berg: CRO Weekly on Substack
CRO Weekly, Tom van den Berg's Substack, focuses on experimentation, statistics and data-driven decision-making. Alongside his own articles on running and scaling experimentation programs, it curates CRO and experimentation reads, events, talks, tools and jobs.
Best for: experimentation specialists; marketers and analysts who interpret test data; CRO practitioners who want a weekly digest. Key topics: experimentation methodology; test design and validity; experimentation metrics; building experimentation programs.
7. Analytics-Toolkit blog
The Analytics-Toolkit blog is run by Georgi Georgiev, author of Statistical Methods in Online A/B Testing. It goes deep on the statistics of A/B testing, which makes it valuable for anyone who wants reliable test results. For a primer, read our guide to statistical significance.
Best for: CRO professionals and experimentation leads; analysts; statisticians and technical specialists. Key topics: designing and analyzing A/B tests; sequential testing and statistical power; false positive risk; common experimentation pitfalls.
CRO experts to follow on LinkedIn
1. Valentin Radu
Valentin Radu is the founder and CEO of Omniconvert. With a background in marketing and entrepreneurship, he is known for his work on customer experience, data-driven marketing, eCommerce optimization and customer value optimization.
2. Michael Aagaard
Michael Aagaard is an independent CRO consultant who has worked full-time in conversion optimization since 2008, with agency, in-house and consulting experience. He is an international keynote speaker on CRO and experimentation and a public speaking coach.
3. Nicolai Høg
Nicolai Høg is Senior Director of SEO, CRO and UX at WPP Media Denmark (formerly GroupM), where he leads a team of 20+ specialists across conversion optimization, user experience, dynamic creative optimization and search. He is a well-known voice on the Danish CRO scene.
4. Carlos Trujillo
Carlos Trujillo works at Speero, where he sets up, runs and scales experimentation and CRO programs for eCommerce brands, startups and enterprises. Before that he founded an agency and led web development and conversion projects for many brands. He also teaches CRO for eCommerce growth at CXL.
5. Brian Massey
Brian Massey is the founder of Conversion Sciences and the author of Your Customer Creation Equation. Known as "The Conversion Scientist," he has helped hundreds of companies improve their online business and speaks regularly at industry events.
6. Fosca Fimiani
Fosca Fimiani moved into web analytics after a master's degree in Applied Physics at the University of Bologna, followed by a master's in marketing and communication. She has worked in analytics and CRO roles at Web Ranking, Yoox, Merkle and Boosterbox, and now works as a data analyst and project manager at MultiMinds. She also helps organize MeasureCamp Italy.
7. Ronny Kohavi
Ronny Kohavi is one of the best-known experts in online controlled experiments. He led Relevance and Experimentation at Airbnb, Analysis and Experimentation at Microsoft, and Data Mining and Personalization at Amazon. He co-authored Trustworthy Online Controlled Experiments and now consults and teaches on A/B testing.
8. Kelly Wortham
Kelly Wortham has more than 20 years of experience in digital and offline experimentation. She is the founder of the Test & Learn Community (TLC), a community of experimentation practitioners, and is passionate about learning and teaching digital experimentation.
9. Ole Gregersen
Ole Gregersen is a CRO expert with more than 12 years of experience. He is CRO Lead at IMPACT and runs the Conversionboost conference in Copenhagen.
10. Martin Greif
Martin Greif is President of SiteTuners, a conversion rate optimization expert, author and speaker with more than 25 years of sales and marketing experience. He runs SiteTuners' day-to-day operations, drives revenue growth and partner relationships, and represents the company at industry events worldwide.
Top CRO YouTube channels
1. CXL
CXL's YouTube channel offers expert-led tutorials, webinars and case studies on experimentation, A/B testing, personalization and user behavior analysis. It suits professionals who want to advance their CRO expertise.
Key topics: A/B testing frameworks; user psychology in conversion optimization; CRO case studies; personalization techniques.
2. Analytics Mania
Analytics Mania, created by Julius Fedorovicius, is a go-to channel for Google Analytics and Google Tag Manager. Its step-by-step guides on tracking implementation, debugging and data interpretation make complex analytics concepts accessible, even for beginners.
Key topics: implementing and configuring Google Tag Manager; debugging tracking issues; event tracking for CRO campaigns; measuring conversion performance in Google Analytics.
3. MeasureSchool
MeasureSchool, founded by Julian Juenemann, teaches data-driven marketing through tutorials on Google Analytics 4, Google Tag Manager and related tools. It is especially valuable for CRO professionals who need precise data to inform their optimization strategies.
Key topics: advanced tracking setups; analyzing user behavior and conversions in GA4; integrating analytics tools; event tracking and custom reporting.
Frequently Asked Questions
The best way to learn CRO is to combine a structured course (such as the CXL Conversion Optimization program, the Growth Tribe CRO certificate or the CVO course from Omniconvert Academy), a few books that teach the thinking behind experimentation, a handful of specialist blogs, and practitioners to follow on LinkedIn. Then apply what you learn by running real A/B tests.
Beginners usually get the most from a low-cost, self-paced course such as The Complete Conversion Optimization Course on Udemy, or from the Growth Tribe Conversion Rate Optimisation Certificate, which is built for intermediate marketers but welcomes ambitious beginners. The CXL program suits people who already know the basics and want advanced depth.
The CXL program is one of the most in-depth CRO trainings available, covering research, analytics, UX, psychology, testing and program design, with a final exam and a certification. It is worth it for marketers and CRO specialists who will run optimization work regularly. Beginners may prefer a cheaper introductory course first.
A good CRO reading list mixes practical and conceptual books: Conversion Optimization by Khalid Saleh and Ayat Shukairy for method, Black Box Thinking by Matthew Syed for a learn-from-failure mindset, Demand-Side Sales 101 by Bob Moesta for customer motivation, Converted by Neil Hoyne for customer data, The Innovator's Dilemma by Clayton Christensen for strategy, and CLV Revolution by Valentin Radu for customer lifetime value.
The Analytics-Toolkit blog by Georgi Georgiev covers A/B testing statistics in depth, including sequential testing, statistical power and false positive risk. Tom van den Berg's CRO Weekly on Substack curates experimentation reads, and the CXL blog publishes advanced experimentation frameworks.
Practitioners worth following include Valentin Radu, Michael Aagaard, Nicolai Høg, Carlos Trujillo, Brian Massey, Fosca Fimiani, Ronny Kohavi, Kelly Wortham, Ole Gregersen and Martin Greif. Between them they cover CRO consulting, agency work, analytics, experimentation statistics and building a testing culture.
Yes. CRO decisions depend on trustworthy data, so you need to know how to set up tracking and read conversion data in tools such as Google Analytics 4 and Google Tag Manager. YouTube channels such as Analytics Mania and MeasureSchool teach these skills for free.
Pick one page with enough traffic, research why visitors do not convert, write a hypothesis, and run an A/B test long enough to reach a reliable result. Document what you learn and repeat. An experimentation platform such as Omniconvert Explore lets you run A/B tests, personalization and on-site surveys in one place.
With so much content on the internet, it is hard to find CRO resources you can trust, and easy to lose time on generic advice. This list brings together courses, books, blogs, experts and channels selected for their practical value and expert-driven content. Pick one resource from each group that matches your level, then apply what you learn in real experiments. That is how reading turns into better decisions and meaningful optimization results.
Put what you learn into practice
Omniconvert Explore lets you run A/B and multivariate tests, personalize experiences by segment and survey visitors on site. Built on 70,000+ experiments across 7,000+ websites, with a 23.2% average uplift.