In the beginning you have in your wallet less than $100. Money you will need to pay for taxi, shopping and other stuff. You can check how much money you have in you inventory - click see on a wallet and you will see a number.
Extra money you get from... gambling. The best way to get money is to visit Caesar's Phallus hotel and use machines to blackjack on the left.
Your goal is to get 21 points. Cards from 2 to 9 has 2 to 9 points. 10, J, Q and K gives 10 points each. A has 1 or 11 points (it's depend what is better for player). After starting a game you get two cards. If you have 21 points and opponent can't get it in his two cards (because his first card is low) you win.
But it isn't very often situation. Usually you press DEAL/HIT button to take next cards. When you get close to 21 points it's better to click STAY when get 22 or more points - then you lose for sure. When you have 20 point always press STAY. When you have 18 or 19 points it's very risky to get another card (you have to get 3 or 2).
You can change bet by pressing buttons in the bottom of the screen. BEST way to get a lot of money is save game, play with high bet and if you win save game again, if not load game at try again.
The money you can need in many situations. If you don't have $17 - $24 you don't be able to use a taxi to go to Caesar's Phallus hotel to make money. That's why you can see slot machine in almost every places. You can play on them in Lefty's bar, Cone-n-go shop, Weddin' Ready chapel and of course in Caesar's Phallus hotel. There isn't any slot machine in Club 69 but from there you can go on your foot to Cone-n-go shop.
This is slots machine. To win you have to get proper symbols. It's less profitable game because it's more random (compared to blackjack where you have some influence on the game). To play it you click SPIN.
To check what you have to get to get money click PAY TABLE. This game is a really your last chance. Better way is to go to the hotel and play at machines to blackjack.
What will happen when you lose all your money and in your wallet you will have nothing? When you get out from Caesar's Phallus hotel or other location you will meet beggar. He will give you $10. Then you can get back and try to get more money. So that's why save game and load game things is very helpful.