If you're new to web security, it can be difficult to know where to begin. That is why PortSwigger created a suggested learning path to point you in the right direction. Learning Path - Web Security Academy

The Intigriti Hackademy is a collection of free online learning resources in the field of web security. For every vulnerability category, you will find a detailed explanation with real-life examples, write-ups, bug bounty tips, ...

Bug Bytes is a weekly newsletter curated by members of the bug bounty community. The first series is curated by Mariem, better known as PentesterLand. Every week, she keeps us up to date with a comprehensive list of write-ups, tools, tutorials and resources.

PentesterLab - We make learning web hacking easier! Our exercises cover everything from basic bugs to advanced vulnerabilities. Not only will we help you learn but you'll also have fun doing it!

List of bug bounty tips

intigriti Hackademy videos by PwnFunction

You've got pwned: exploiting e-mail systems by @securinti

Web Hacking 101: Hacking Pro Tips by Peter Yaworski

Stök's channel

InsiderPhd's channel

Real-World Bug Hunting: A Field Guide to Web hacking by Peter Yaworski

The Web Application Hacker's Handbook 2nd edition by Dafydd Stuttard  & Marcus Pinto  

Web Hacking 101 by Peter Yaworski