The initial disorientation of leaving the WT, or any cult, is difficult. But it will pass. You will have all the time you need to take in the facts and make your own decisions about what your beliefs are, and what makes sense to you. Your beliefs will then be your own. And that means you will be the one that wins, not Satan.
I grew up as a JW too. It has it's challenges. If you're like me, you will realize that leaving it is the best thing you ever did for yourself, and possibly your family too. You don't have to tell them anything until, or unless, you're ready. But some of them might want to get out eventually too, and you could be the one to help them.
Best wishes on the journey ahead. It will take courage, but it will be a wonderful adventure!