Homebrew Wii Help? How to get games?

So I recently got Homebrew & Homebrew Browser on my wii, but I have no idea how to use it. I tried downloading the emulatiors, they seemed to work, but I have no idea where to go from here. How do I get games? I've been looking forward to playing oldschool pokemon, super mario bros, etc. and I have no idea where to start. Can someone give me some help?