Dolphin Emulator games?

[Referal]

Has anyone used dolphin emulator before its an emulator used to play all games from you Will, PlayStation to your Xbox the problem is I don't know where you can find its games from are there any sites out there ROMs don't work and are very malicious as some may contain a virus such as a rootkit or mostly torjans so I am looking for an emulator which is awesome and I think dolphin maybe it the right one for me until I have a ROM which works and has an ISO file in it and not corrupted.