My observation would be that knowledge is power. It isn't necessary to do much research to see that WTBS is an organisation which is at least as full of holes as every other religion. The more you know, the more you will realise that if there is some 'truth' out there, Jehovah's Witnesses do not have it (and neither does anyone else as far as I can see so far).
You would think if there was a God-sponsored organisation out there, he would make it a bit more obvious wouldn't you? I wouldn't accept suggestions that "well Israel wasn't perfect, and neither were the Apostles" as that requires one to accept that both were what is claimed for them - which is a rather circular argument.
For what it is worth, my advise would be read around the subject. Ask questions of those who have been involved. Understand the history of the organisation and do not surrender your own powers of reasoning to anyone... and keep doing it :)