The Waterloo Cybersecurity CTF Team had hold a two part event going over basic skills needed for cybersecurity competitions.
Website about reverse engineering
https://microcorruption.com/
Tools about assembly language
sudo apt-get install radare2
The group chat tool for asking questions
https://discordapp.com/
The tutorial document material
https://github.com/JasonL84/CTF-Training-Materials
It’s interesting!