Easy money
After creating a character and loading it, go to "Craps" and select it. Then, choose "Limit Games". Next, select "$50-$1,000 Limits". Once at the crap table, bet $1,000 on Double 1's or Double 6's. Then, roll the dice. If you lose, press A(3) to return to the craps table, where you can bet $1,000 again. Keep doing this until you win. You should end up with $31,000, which is enough to play most of the games. If you lose all your money, go back to the craps table and repeat the process to earn $31,000 again.