motherlode - This will add 50,000 simoleons to your active household.
testingCheatsenabled true - This will add a lot of cheats... Start off by pressing shift-click #### #### box.
buydebug - This can only be activated with the 'testingCheatsenabled true' cheat. This will add a lot of stuff you can't normally buy so go and check out buy mode..
These are all the cheats I use, I have some expansion packs so I'm not too sure if all the cheats will work... I hope this was helpful