Based on the Marvel Previews #96, August for October 2011, I'd say you need to pre-order the following books in order to keep up with Spider-Man.
Core Titles
Amazing Spider-Man #671
Amazing Spider-Man #672
Spider-Man, Marvel Adventures #19
Ultimate Spider-Man #3
Guest Apps
Avengers #18
Avengers #18, Marvel Comics 50th Anniversary variant
Avengers: The Children's Crusade #8
FF #10
FF #11
New Avengers #17
New Avengers #17, Marvel Comics 50th Anniversary variant
Spin-Offs
Venom #8
Reprints
Essential Spider-Man Vol. 5 (All-New Edition) TPB
Essential Spider-Man Vol. 6 (All-New Edition) TPB
Marvel Firsts: The 1960s TPB
Marvel Super Stars Magazine #8
Spider-Man: Deadly Foes TPB
Spider-Man: Masques Premiere HC
Spider-Man: Masques Premiere HC, variant edition
Spider-Man: The Complete Ben Reilly Epic Book 2 TPB
Spider-Man: With Great Power Comes Great Responsibility #7
Ultimate Spider-Man: Death Of Spider-Man Premiere HC, McNiven cover (DM only)
Ultimate Spider-Man: Death Of Spider-Man Premiere HC, Quesada cover
Venom: Lethal Protector TPB