Teach Yourself Computer Science
See: https://teachyourselfcs.com/
The suggestion is to pursue these topics in the order than they appear in:
Programming
Recommended reading: Structure and Interpretation of Computer Programs.
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The recommendation here is to work through the first three chapters.
Computer Architecture
Recommended reading: Computer Systems: A Programmer's Perspective.
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According to the website, chapters 1-6 cover most of a introductory course on the topic.
Algorithms and Data Structures
Books:
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How to Solve It.
Math for CS
Starting point:
Lecture Notes (Laszlo Lovasz):
https://cims.nyu.edu/~regev/teaching/discretefall_2005/dmbook.pdf
Books: Mathematics For Computer Science:
https://courses.csail.mit.edu/6.042/spring17/mcs.pdf
Operating Systems
Operating Systems Concepts (Dinosaur book)
Modern Operating Systems
Operating Systems: 3 easy pieces.
Distributed Systems
Books: Computer Networking: A top Down approach.
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