Alright. So loads of people have been wondering, "How do I get money quickly?". One is to do the push button cheat. The only problem with that is, it means your progress even after completing the game will always stay at 99%. So i discovered a way for people to get money, without being a complete cheating *******.

In Los Santos there should be a lot of people walking round wearing black vests and pants with there hands in front of them usaly waiting round. If you look closely some people from your gang come up to them and ask them for stuff. If you walk up to them they would usualy turn around and there will be a box in the corner saying soemthing about replying possitvely/negatively. KILL THAT GUY!(BEWARE HE HAS A PISTOL AND IF YOU AIM AT HIM INFRONT OF HIM HE WILL SHOOT YOU!)After killing them you will see that the guy is stashed with a lot of cash. The cash amounts to aproimately $2K. That is because he is a Drug Dealer.
Also there are guys wearing white hoodies. They are also Drug Dealers.

(note: I do not know what the other drug dealers look like in the other places, but I suspect that there is no drug dealers in the other places.)