Cheats
Turn on infinite lives.
Paste a code once. Flip it on mid-game, off when you are done.
Game GenieGameSharkAction ReplayPro Action ReplayCode BreakerCWCheatGateway
Where to find codes
GameHacking.org
Biggest archive. Search by game.
gamehacking.orgGameFAQs
Cheat tab on most game pages.
gamefaqs.gamespot.comr/Delta_Emulator
Ask when a code will not take.
reddit.comCommunity sites, not affiliated with Pok.