Hi @catmoot,
One of my favorite tutorials is Connecting to public test networks.
I 
all the OpenZeppelin Learn guides. When I started in 2017 I would have given almost anything to have these.
I have started a Coding Journey: Personal log to keep track of useful guides that I keep coming back to. (I keep looking at how to sync your fork with the original repo).
I find the best way to learn is to teach. I learn through answering questions.