I always recommend http://pages.cs.wisc.edu/~remzi/OSTEP/ http://pages.cs.wisc.edu/~remzi/OSTEP/ to learn the basics. The two first parts cover most of what you

I always recommend http://pages.cs.wisc.edu/~remzi/OSTEP/ http://pages.cs.wisc.edu/~remzi/OSTEP/ to learn the basics. The two first parts cover most of what you need as a developer.