Patdiesel recomended this book and it has been extremely useful for learning about turbos. If you're really gonna do a turbo setup and you wanna do it right, but you don't that much about turbos, intercoolers, fuel management etc you should buy this book. It's really well written and it'll enlighten you about what turbo would best fit your needs.
Jarid Perry
94 mx3 Turrrbooooo (not even close to stock) 302WHP
71 Chevy C20 (tow rig!!)
77 Jeep CJ5 (no way its stock)
06 MINI Cooper S JCW GP (few goodies) 210WHP
2008 MINI Cooper Clubman S