clueless

hi there helpful people,i am totally new to this and absolutely clueless.iv recently had my psp done so i can play psp roms on it that are on my memory card.however,im trying to get the 1st sonic game downloaded and dont know where to start.do i need to get an emulator for sega then download the gae and how do i get it onto my psp.any help would be very much appreciated

Certainly, you need a Sega emulator for PSP. Asking where to get games is strictly forbidden here. Also, I think you need some specific firmware version, but I'm not an expert in PSP stuff.