This course is excellent and I cannot recommend it to OP highly enough. A great book to go with it is Computer Systems: A Programmer's Perspective (CSAPP).

this is the best resource for getting started, with tangible examples on every topic.

Wow! This is great, thank you for sharing. I ended up buying it.

I think the downvotes are linked to the fact that the course is far for complete yet. But it's definitely good info !