Based on the Marvel Previews #77, January for March 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 #623
Amazing Spider-Man #623, villain variant
Amazing Spider-Man #624
Amazing Spider-Man #625
Amazing Spider-Man #626
Amazing Spider-Man #627
Marvel Adventures Spider-Man #61
New Avengers #63
Peter Parker #1
Spider-Man & The Secret Wars #4
Spider-Man Noir: Eyes Without A Face #4
Spider-Man Noir: Eyes Without A Face #4, variant cover
Ultimate Spider-Man #8
Web Of Spider-Man #6
Guest Apps
Amazing Spider-Man Presents: Jackpot #3
Breaking Into Comics The Marvel Way #1
Breaking Into Comics The Marvel Way #2
Deadpool #21
Girl Comics #1
Incredible Hulk #608
Ultimate Comics Enemy #3
Reprints
Amazing Spider-Man By JMS Ultimate Collection Book 3 TPB
Spectacular Spider-Girl: Who Killed Gwen Reilly? TPB
Spider-Girl Vol. 12: The Games Villains Play Digest TPB
Spider-Man Magazine #10
Ultimate Comics Spider-Man: The World According To Peter Parker Premiere HC
Ultimate Spider-Man Vol. 11 HC