Join online casino sites and receive a no deposit bonus. There is no cost in to you at all to sign up, normally the bonus is added instantly and you have a chance to win a bit of cash playing the games just for taking a bit of time and registering an account.
After you gain access to the casino, you should see your no deposit bonus in your account. All bonuses do have some wagering requirements which will be specified by the casinos terms and conditions. They could include max amounts that you will be able to cash out on, they will have a maximum amount of times you have to wager the bonus. Commonly this is around 30x the amount you were given. If you bet wisely you could come out ahead, watch the casino games you pick to play as some will not count towards you wager through. Slots are you best bet as all casinos consider them a approved game to play on the no deposit bonus.
Once you have completed the no deposit casino bonus, you may consider purchasing. You will still qualify for their opening offer, which is usually a 100% bonus on deposit. That will give you extra money to play the games with a higher chances of winning. Of course there is no guarantee you will win but that is why they call it gambling. Hopefully you will have a streak of luck and come out ahead. Here we only list a selected few, but you can check out a more detailed site dedicated to casino sites with no deposit promotional offers, that may appeal more to you.