very impressive/obsessive... however there is one hole in it. The part about Alvar and his wife laying down to die in the caves. That is not Alvar. We know thru the Experience that Alvar is alive and well in the outside world. And I don't think he's even married. He had at least one child, Rachel Blake, but she was out of wedlock.
I would highly suggest what Super-King mentioned. Watch from the beginning. The catchup specials that air every once in awhile are just not enough. Take some time to watch them, or don't at all. But I will say that is the best show on television right now. Most cinematic experience I've had outside the theatre ever. Season 3 dvds should be out by August in the US. So if you start now, say one season a month, you should be set
Quite a bit. Most reveals come from the characters' flashback stories, not to mention the more that is peeled back and revealed about the Others and the island itself. Lostpedia.com is your friend.