I had a blog back in the day where we discussed each episode in separate recap posts. It gained traction near the end of season 3 and just kept growing. Lots of good discussions. I'll still respond to comments with my unspoilery thoughts as well. Several binge watchers still visit and comment from time to time.
Site: www.lostaddictsblog.com
Links to each individual recap: http://www.tvaddictsblog.com/p/lost-addicts.html
Actually, some of the posts in it were included in a LOST e-book Compilation. It's a collection of lots of material from lots of the popular LOST bloggers at the time. Not saying I was one of them, just honored I was included! It contains in-depth discussions of LOST as a whole and on an episode to episode basis. It's massive and I wouldn't recommend trying to read the entire thing. But it would be a great companion through your journey with interactive links to get where you need to get in the book. I have a discount linked on my site, but I wouldn't blame you for going with the Kindle version.
Enjoy the show! It's quite a ride.