Operating Systems Courses
Google via Coursera C++ Programming
Zenva via YouTube Operating Systems
YouTube Introducing ICT systems
The Open University via OpenLearn Side Channel Security – Caches and Physical Attacks
Graz University of Technology via edX Unix System Basics
Codio via Coursera Linux Tutorial for Beginners in Hindi - Linux Administration Tutorial
Great Learning via YouTube CompTIA A+ 220-1001
Cybrary Command Line Basics
Cybrary CompTIA A+ 220-1002
Cybrary