https://www.khanacademy.org/computing/computer-science

https://www.khanacademy.org/computing/computer-programming

https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-101-introductory-analog-electronics-laboratory-spring-2007/study-materials/

nanoHUB Education: nanotech, nanoelectronics, energy, materials, nanophotonics, computational science, and more

https://nanohub.org/groups/education