This video is a simple programming intro for complete beginners that explains the int variable, ifs, loops, and printf.
Botball Homepage
https://www.kipr.org/botball
A great Botball programming page
https://botballprogramming.org/
All about Botball
https://en.wikipedia.org/wiki/Botball
A large (and overwhelming) c cheat sheet
https://www.dummies.com/programming/c/beginning-c-programming-for-dummies-cheat-sheet/
