AlphaPhoneix
Applied Science
3Blue1Brown
Numberphile
JEOL Scanning Electron Microscope A to Z
MTU ACMAL eTraining
Britney Spears' Guide to Semiconductor Physics
The Feynman Lectures on Physics
NanoHub - ECE 606: Principles of Semiconductor Devices
Falstad Circuit Simulator Applet
How to Read a Datasheet