Oh yes, for the bitcoin related stuff I’m all good with cold wallet etc What I wanted to learn more about is computer stuff in general. Ppl here talk all the time about relays, open source and here I am not even knowing the difference between an application and a protocol. I started the computer science block on Kahn academy to get the basis, but I was looking more for a practical oriented approach. Since the subject is so wide I’m afraid to spend 100 hours studying lots of theory I could have done without. Not sure if I am making sense