This web page contains some of the material from the ARCC workshop
Ricci Flow and Geometrization of 3-Manifolds.
You may also want to look at some other resources.
David Gabai: "The Geometrization conjecture", directory of scanned slides in color or black and white
Ben Chow: Basic facts about Ricci flow
Bruce Kleiner: An overview of Perelman's argument
Ben Chow: Tutorial on maximum principles.