I can't give you specific advice, but in general it sounds you are already on the right track. You are basically exposing yourself to this new stuff, it raises questions that you want to have answered and you reach out to a community to know more. The stuff they wrote you don't understand YET is part of the journey and if you continue to practice work in that domain, you will be able to connect the dots. TL;DR My advice is, be fair to yourself, accept it's a new domain and be resilient and continue despite the difficulties. I hope a systems programmer will give you more specific advice.