Based on the Marvel Previews #1, August for October 2012, I'd say you need to pre-order the following books in order to keep up with Spider-Man.
Core Titles
Amazing Spider-Man #695
Amazing Spider-Man #696
Avenging Spider-Man #13
Avenging Spider-Man Annual #1
Marvel Universe Ultimate Spider-Man #7
Scarlet Spider #10
Ultimate Spider-Man #16
Ultimate Spider-Man #16.1
Guest Apps
A+X #1
A+X #1, blank cover
A+X #1, sketch variant cover, Ed McGuinness
A+X #1, variant cover TBA
A+X #1, variant cover, ASM 50th Anniversary
A-Babies V. X-Babies #1
AVX: Consequences #1
AVX: Consequences #1, variant cover Patrick Zircher
Fantastic Four #611
Invincible Iron Man #527
Marvel NOW! Point One #1
Marvel NOW! Point One #1, sketch variant cover Joe Quesada
Marvel NOW! Point One #1, variant cover Joe Quesada
Marvel NOW! Point One #1, variant cover Skottie Young
Minimum Carnage: Alpha #1
New Avengers #32
Punisher : War Zone #1
Spin-Offs
Venom #26
Reprints
Marvel Universe Ultimate Spider-Man Vol.1 Digest TPB
Spider-Man: The Complete Ben Reilly Epic Book 6 TPB
Spider-Man: World's Greatest Hero TPB
Spider-Men HC
Ultimate Comics Spider-Man By Brian Michael Benids Vol. 2 TPB
Ultimate Comics Spider-Man By Brian Michael Benids Vol. 3 Premiere HC