Ask HN: How to learn Computer Architecture design?

Hello! Long time lurker here.

I have a question, as a first year EE student who is not in a top university (and in a third world country), how could I prepare for a Computer Architecture design position in the far future? What are the best resources to learn? What should I focus on? I realize that I will need a PhD and a lot of experience; I am asking for the things that I should do now to begin the journey.

I tried to search the web, however I could not find much.

Thank you in advance.