ps1 games on psp help

[rodiccuss]

I have an old psp and I want to download ps1 games on it. I already got the emulator but I am having a hard time with the games now that emuparadise is no more (rip). I tried downloading from other websites such as freeroms, coolroms but my antivirus (Avira) does not allow me to finish the downloads, and I am not even sure how realible they are. Any suggestions? I even tried to disable some features of Avira but it didn't work. What is the best website to download ps1 games now that we've lost emuparadise and what would be the best way to do it? If you guys could keep it basic and give guidance step by step this computer-challenged gamer would appreciate.

Game on!