Based on the Marvel Previews #76, December for February 2010, I'd say you need to pre-order the following books in order to keep up with Spider-Man.
Core Titles
Amazing Spider-Man #620
Amazing Spider-Man #620, special variant
Amazing Spider-Man #621
Amazing Spider-Man #622
Marvel Adventures Spider-Man #60
New Avengers #62
Spider-Man & The Secret Wars #3
Spider-Man 1602 #5
Spider-Man Noir: Eyes Without A Face #3
Spider-Man Noir: Eyes Without A Face #3, variant
Spider-Man: The Clone Saga #6
Ultimate Spider-Man #7
Web Of Spider-Man #5
Web Of Spider-Man #5, special variant
Guest Apps
Amazing Spider-Man Presents: Jackpot #2
Incredible Hercules #141
Incredible Hercules #141, special variant
Incredible Hulk #607, variant cover
Marvel Heartbreakers #1
Ms. Marvel #50
Ms. Marvel #50, variant
Official Index To The Marvel Universe #14
Reprints
Marvel Adventures Iron Man / Spider-Man Digest
Spider-Man: 24/7 TPB
Spider-Man: American Son TPB
Spider-Man: Anti-Venom TPB
Spider-Man: Gauntlet Book 1 - Electro & Sandman Premiere HC
Spider-Man: The Complete Clone Saga Epic Book 1 TPB
Strange Tales HC