Unlock A Lot Of Stuff At The Beginning Of The Game
Normally, when you start the game you can't go to many places. If you follow my advice you can go into most (possibly all) of the stores, you can leave Los Santos (but the cops will still come after you), and possibly other stuff I don't know about will be unlocked.
1. Start a new game.
2. Watch the cutscene (you must do this or it will not work).
3. During the cutscene, after CJ is put into the squadcar and when the squadcar goes over the railroad tracks enter in the jetpack cheat (Left, Right, L1, L2, R1, R2, Up, Down, Left, Right) This must be done before CJ is thrown from the car.
If all goes well, when CJ is thrown from the car the car will blow-up and CJ will die. This is normal.
When you respawn at the hospital, go on your first mission then go to your house and save. You'll find that you can buy all of the safehouses (provided you have the money), buy stuff in the stores, mod cars at the Mod Garages, and lots more. Some stuff won't show up on the radar yet, but you'll still be able to go in them as long as you can find them on your own. The roadblocks on the roads leading out of the Los Santos/Red County area will also be gone, but be careful because the cops will come after you right away if you try to leave.
Added by: System Folder May 10th 2008, ID#30094