LINKS FOR STRING THEORY
Strings for beginners (and groupies)
Patricia's site for superstrings and...
John's site for strings
A succinct introduction to Superstring theory by Brian Greene.
And another by Robert Dijkgraaf.
A simple review article by Wolfgang Lerche on recent progress in string theory
Witten's view on the status of string theory.
And some Hawking glitz.
Lectures on Strings (Graduate Level)
Introduction to string theory by Joe Polchinski.
An introduction to non-perturbative string theory by Ashoke Sen.
String Theory on Calabi-Yau Manifolds by B. Greene.
A review of holography By Aharony et al. in the context of AdS/CFT correspondence.