Read the guides. Watch a couple YT vids, usually people will post Let's Play vids and/or strategy & HowTos.

And then, like all things, just doing it. You don't get better at running by reading running 'zines, you just go out there and beat your feet. Same deal with coding, same with cooking, etc. etc.

Also recommend getting a good chair, desk, comfy setup, etc. It's a lot easier to focus when everything else is working for you. Same holds true for a lot of other work.