What programming language do software developers use? To develop apps and also OS.

Answer 1

Concentrating on the OS part of the question, you'd need to learn something like c/c++ or assembly language

Edit: For apps it's just whatever general purpose language you/they like best

Answer 2

Check this out Jr. 😉

http://www.openculture.com/freeonlinecourses#Computer Science Courses

https://www.ted.com/talks/shai_reshef_a_tuition_free_college_degree

www.coursera.org

www.stackoverflow.com

https://www.sololearn.com/discuss/510275/?ref=app