Handy Cheat Sheets

Github Cheat Sheet

Markdown Cheat Sheet
(You know you want fancy READMEs.)

Useful Software

Open On-Chip Debugger
(Debugging, in-system programming and boundary-scan testing for embedded target devices)

Useful Educational Websites

AVR C Tutorial

AVR Tutorial from Lady Ada (founder of Adafruit!)

The Deadlock Empire: Slay Dragons, Master Concurrency!

Fantastic Textbooks to Own

The Art of Electronics (HIGHLY recommend)

High Speed Digital Design: A Handbook of Black Magic