Hello. I've recently started soldering, specifically wanting to repair the joysticks on several Playstation 4 controllers I have, but I also want to get good at electronic repair in general.

Right now I've busted a board, and managed to desolder and resolder a stick but the controller doesn't turn on anymore. I'm doing this all by myself, and I think I'm following good advice (ventilation, good iron tip, using flux etc...).

But there are many variables, and a lot of experts have different opinions on stuff. Does anyone know good resources that I could use for getting good and making less mistakes ? Thanks.