The front part of Making Websites Win explains the concept and definition of Conversion Rate Optimization (mostly centered around A/B testing) before it delves into the different tools and techniques that you can use to diagnose and improve your website.
Well organised with clear, actionable ideas, the book has an interesting section on good copywriting and why it matters. The authors also recommended a bunch of resources to read if you’re keen to follow through with the subject matter.
There are many great example in wire frame towards the end of the book. Unfortunately, the case study in section 4 has too many screen shots that are too small to even distinguish what they represented.