I would say there are a handful of sites that, once you start questioning, play a big part in educating and informing one on the other side of the "truth". jwfacts, this site, jwstruggle, 607v587.com, jwsurvey. Youtube is very good as well if you pick your posters. I personally really like apostachick and jwpodcast. I think reddit is good for some but I don't really use it.
For me the other sites are more secular like those debunking {EDIT} creationism (not evolution!), the Flood etc were also pivotal in helping me get over my mental reasoning blocks.