When your referring to free casinos this is a term used for online casinos giving away money without purchase. How it all works is that you go to the casino website and you will see an opening offer of free money. The amount will depend on what page you landed on when you went to the casino as many of them have special landing pages to promote certain no deposit bonus offers. Big mistake some people do is go directly to the casino and the offer is not there. Some of the time the promotion will be small other times it will be a large bonus it all varies based on what the casino is willing to do to get players into their casino. After some time of running a promotion the owners do decide it is ineffective and will change it to something else which they hope will appeal to players more. They might get it right or they might get it wrong but they will continue trying until they get one that works for most all people.
After you have found a free casino that you want to play at you will need to install the casino and complete the required forms for registering. Then you are on your way to have some fun. Playing in the casinos should be fun if not then you should not be there. If you are lucky you might win a bunch of money if not then you have lost nothing as your not paying to get the bonus. Now let’s say you won and enormous amount of money on the no deposit bonus, can you cash it all out? No they do have limits on what you can cash out so you will need to check the terms to find out just what the limits are but you will be able to cash out some of the money. Your maximum amount will be indicated so you can enjoy what you have won anyways. You are welcome to purchase at any of these free casinos, you are not bound to take the free offer by any means. So it is up to you if you want to be restricted to the rules or simple purchase and not worry about it.