Well, all the basic info you may find on their main site but it wouldn't harm you to join their forums as well. They also have a Discord server where you can ask questions if you get stuck.

I just want to point out to you here that you may start mining without the need to wait for the downloaded wallet to completely synchronize with the blockchain (as it may last for ages until it is going to pick the whole history data), simply because you may create and access your wallet online. There are also some other tricks to shortening the preparation time (plotting and stuff) for mining, but that's another complete story. 😉