Based on the Marvel Previews #61, September for November 2008, I'd say you need to pre-order the following books in order to keep up with Spider-Man.
Core Titles
Amazing Spider-Girl #26
Amazing Spider-Man #576
Amazing Spider-Man #577
Amazing Spider-Man #577, variant cover by Sal Buscema
Amazing Spider-Man #578
Marvel Adventures Avengers #30
Marvel Adventures Spider-Man #45
Marvel Adventures Super Heroes #5
Spider-Man Loves Mary Jane #4
Ultimate Spider-Man #128
X-Men / Spider-Man #1
Guest Apps
Avengers / Invaders #6
Avengers / Invaders #6, variant cover by Olivier Coipel
Invincible Iron Man #7
Ms. Marvel Special: Storyteller
New Avengers #47
Secret Invasion: Front Line #5
Ultimatum #1
Ultimatum #1, variant cover by Ed McGuiness
Ultimatum #1, white variant cover by David Finch
Ultimatum #2
Ultimatum #2, variant cover by Ed McGuiness
Reprints
Daredevil By Frank Miller & Klaus Janson Vol. 1 TPB
Hulk Chronicles: WWH #5
Marvel Adventures Iron Man: Armored Avenger Digest
Marvel Adventures Two-In-One #17
Marvel Two-In-One #17
Mythos HC
Spider-Man: Brand New Day #2
Spider-Man: Kraven's First Hunt Premiere HC
Spin-Offs
Venom: Dark Origin #4