To enter your gambling winnings and losses in TurboTax, please follow these steps:

1. Click on Federal Taxes > Wages & Income 
2. In the Less Common Income section , click on the Start/Update box next to gambling winnings.  
3. On the Gambling Winnings screen, click the Yes box.
4. On the screen, Tell Us About Your Winnings, click the Skip W2-G box if Form W2g is not issued.  
5. On the next screen, Any Other Gambling Winnings, click the Yes box.  
6. You will be able to enter your winnings in the Other Gambling Winnings screen. 
7. Since gambling losses can be deducted as an itemized deduction up to the total of reported gambling and prize winnings, enter your losses (if any) on the next screen, Gambling Losses.