I wrote a Linux general purpose library for x64 assembler: https://2ton.com.au/HeavyThing/ and in recent months I decided to start doing video tutorials about the "how and why" of same. Learning I think is made easiest in Linux by learning how to navigate the syscall interface and how "man 2 write" becomes an important skill. Edit: Videos link as well: https://2ton.com.au/videos/