The Citadel is an archive of information for George R.R. Martin's A Song of Ice and Fire.
New to the series? Read our spoiler-free review of A Game of Thrones.
[Note: This report is a tiny bit spoilerish, describing both the identity of the prologue character but also the identity of which POV has the first chapter in the book, a detail we have not previously had. If you're interested in reading full reports and speculation on the prologue, visit this thread on the A Song of Ice and Fire forum.]
The Westeros network consists of several different sites, including a forum and a wiki, for all your A Song of Ice and Fire needs.