[https://tryhackme.com/room/basicmalwarere BasicMalwareRE] - this room aims towards helping everyone learn about the basics of "Malware Reverse Engineering".
[https://class.malware.re/stuff/nardella/basic-reverse-engineering-immunity-debugger-36982.pdf Basic Reverse Engineering with Immunity Debugger] - SANS Institute Information Security Reading Room. Basic Reverse Engineering x86 with Immunity Debugger.
[https://gist.github.com/IdanBanani/5be0442ad390f89259b494098f450bfd Reversing / Malware Analysis / Assembly -resources] - is a large list of reversing materials and courses.