In no particular order, below are various resources used in studying/reviewing..
- The Ultimate OSCP Preparation Guide, 2021
- Concluding on my OSCP journey
- PortSwagger - Cross-site scripting (XSS) cheat sheet
- Abatchy's Blog
- Secjuice - OSINT Basics: Detecting and Enumerating Firewalls & Gateways
- Attack Methods for Gaining Domain Admin Rights in Active Directory
- OSCP Goldmine
- Using PowerShell for Pentesting
- Windows Privilege Escalation Guide
- Penetration Testing Cheatsheet
- Web-Cheatsheet
- TwinTech OSCP Prep Guide
- Web Application Penetration Testing eBook
- Intermediate Python
- The Lynx Team - OCSP Repo
- Blue Team Live Analysis
- Denise Tan - OSCP Review & Preparation Tips
Good collection