I have limited internet access so I was unable to post it sooner (not that anyone besides myself cares), but I got Teen Titans issue 2 and 3 from the New 52 on Friday last week, as well as the entire series of "Zot!" in paperback! Now I have just acquired:

Deathstroke issue 3

Batgirl issue 10

Infinite Crisis issue 1 of 7

Now, the question comes in a second, but first some explanation; one of my local comic book stores has all 7 issues of the Infinite Crisis issues, and the 80 page comic "Countdown to Infinite Crisis", and I'm planning on getting all of these comics as I'm sure they're absolute treasures (never read anything about the infinite crisis before except in online wiki's), but I'm curious, what other comics should I get that explain a major part of what the story arc is about, and do THOSE comics have any comics that explain them that I may need to pick up? I want to get a self contained story of the arc to read so I can read about all the events involved in it (or rather, the majority of the events), and a 7 page miniseries and an 80 page countdown seems too short for what I thought was one of the largest events in DC's history. So in short: what other comics should I get that might explain the major plot points and characters in the Infinite Crisis story arc?

Also, thinking of getting Batman: Year One Deluxe Edition, but I read the entire thing in Barnes and Noble the other day so I'm unsure if it's wise to buy it now that I've read it for free. Thoughts? I'm considering instead buying No Man's Land part 1 trade paperback, I've read that it's fantastic.