As the mod progresses it is becoming clear to Jedjtl and myself that it might be helpful if future players of the mod were already familiar with the lore of both the books and the show. Most of you probably already are but there will be some elements from both that are not the same from the show and books that will be used in the mod. I know there will probably be just show fans or just book fans that will complain if something happens in the mod that didn't happen in the show but did happen in the books and vice versa. So I am pointing this out and giving you some links to purchase the books and the show below so I have the right to say, "told you so" and to help support the series that inspired our mod.
First the books, and George R.R. Martin's own site is a good place to look as it not only has it where you can look at several purchase links, but also some general guide books and histories of Westeros for those who are interested but don't have the time to read through the entire series.
I myself prefer Amazon and they sell the entire collection for Kindle which has been helpful in taking notes on my computer for story ideas.
As for the show for now I will give you Amazon links but it shouldn't be hard to find elsewhere.