[whitepearl]

https://portswigger.net/web-security

PortSwigger offers free labs and lessons for anyone.

Here's a list of the topics you can learn:
SQL injection
Cross-site scripting
Cross-site request forgery (CSRF)
Clickjacking
DOM-based vulnerabilities
Cross-origin resource sharing (CORS)
XML external entity (XXE) injection
Server-side request forgery (SSRF)
HTTP request smuggling
OS command injection
Server-side template injection
Directory traversal
Access control vulnerabilities
Authentication
WebSockets
Web cache poisoning
Insecure deserialization
Information disclosure
Business logic vulnerabilities
HTTP Host header attacks
OAuth authentication
File upload vulnerabilities
JWT
Essential skills
Prototype pollution
GraphQL API vulnerabilities
Race conditions

[SIMIUS66]

thank you so much dude :)

[thebigboss]

This will be very helpful! Thanks!

[Hungry4Knowledge]

You are sharing great stuff. Was gonna +rep you but ran out my quota for today. Anyways I made a note to do it tomorrow.

[johndoe222]

Thanks for sharing this great stuff!

[larryhaskins05]

I'll try this. Thank you for this one !

[Alex1298]

Thank you very much, I'll try to look and study !