You can only legally gamble online in Singapore at the Singapore Pools, where you can bet on sports (like horse racing) and play lotteries.

How to Start Gambling Online

1
Check the Local Regulations. ...
2
Pick the Best Gambling Site. ...
3
Create an Account. ...
4
Claim the Gambling Welcome Bonus. ...
5
Add Funds to Your Account. ...
6
Place Your Bets. ...
7
Withdraw Your Winnings.