Playing/gambling at online casinos don't have many risk anymore. You have tonnes of regulated casinos out there so you can try one you are attracted to. Legit online casinos make profit through typical methods, always having advantage of being "house". House will always win some. So you don't need to worry if you win - they made enough profits that can cover your win from them. I think if you are seeking good legit online casino, enough is for to look at legal bindings and withdrawal (money) speeds.