The William Hill first bet bonus is pretty simple. Once you sign up, make your first deposit to get started. Then, make a bet of up to $500 on any bet with odds above 1.80 / -125. If you win, great! You've gained your earnings. If you lose, don't fret! You'll be given the credit back as a free bet to try again. Note that you'll have 30 days to make this free bet.