I’d definitely recommend taking it one stage at a time. Start by learning what the emulator is designed to reproduce and what hardware requirements it has. Then move on to basic compatibility information, controller settings and graphics options. There’s no real benefit in changing ten settings simultaneously because, if something goes wrong, you won’t know which change caused the problem. I usually recommend checking documentation here before experimenting with advanced options, because official explanations are generally more reliable than random configuration tips from old forum posts. Once you understand the basic principles, you can gradually experiment and see which settings work best with your own hardware.
