General computing resources

C++

• http://www.learncpp.com/
• http://www.cplusplus.com/

Fortran

• Fortran Wiki
• http://www.fortrantutorial.com/
• How to learn Fortran

Python

• http://inventwithpython.com
• http://www.learnpython.org/
• http://learnpythonthehardway.org/

Other

• Working as a Software Developer - useful read if you touch any code
• A Guide to Midnight Commander