This is a great course from Paul Kelly at Imperial College - I took it when studying there and found it fascinating, although I should have worked much harder on it.

You should have a look at the lecture notes. If the course is too advanced, you can look for its predecessor, which introduces RISC architecture very well and constitutes a strong starting point for anyone interested in this field.

I assume one is meant to look at the lecture and tutorial documents that are linked from there.

you want to access the "web backup" https://www.doc.ic.ac.uk/~phjk/AdvancedCompArchitecture/Lect...

I'm not even sure how this got 6 upvotes.