CS - Introduction Harvard University

Freecodecamp - youtube channel

Dive into Computer Systems- OS & C programming Linux

Operating System Concepts - ppt

Avi Silberschatz, Peter Baer Galvin, Greg Gagne

Operating System - Three pieces

Basic Computer Architecture

Free Programming books - EbookFoundation

Grokking Algorithms - manning

Data Structures and Algorithms - pragprog

The Linux commandline - free ebook

How Linux works - nostarch

Algorithms - Robert Sedgewick

Developer Quiz