Hi RST , wishing you and every one here a healthy and lucky 2017.
About your question, I want to advise you to go read first. Here at AG but also other forums like Casinomeister, The Pogg etc etc.
Which casinos are recommended on all 3 for instance, looks as a good start to me.
Very high welcome bonus / dont trust it.
Keep a sharp eye on where are they licensed. Costa Rica dont do it. Only Curacao dont do it.
Read about pending terms, excluded slots with bonuses if you are a slots player, about withdraw and deposit fees etc etc.
Just my opinion at last, Videoslots.com, Rizk, Unibet, Vera and John, Leo Vegas, I would recommend but I am sure there are a few more, depending on where you live also.
Good luck to you and a ps, never ever gamble with money you cant afford to lose.