The is a masterpiece of modern application security methodology but a poor starting point for beginners .
A focus on better writing styles and layout to make the guide more accessible to non-security specialists like developers and QA engineers. owasp testing guide-v5 pdf
However, here is the breakdown of how to get the "solid" version you are looking for, along with why v5 is distinct from previous versions. The is a masterpiece of modern application security
Reviewing all v4 sections to eliminate obsolete techniques while inserting new tests for client-side security and Firefox extensions . Reviewing all v4 sections to eliminate obsolete techniques
If you are using this for professional work, pair the Testing Guide (WSTG) with the Code Review Guide (OWASP O2) . WSTG tells you how to break it from the outside; the Code Review Guide tells you what the code looks like that causes those breaks.