Based on the Marvel Previews #29, December for February 2015, I'd say you need to pre-order the following books in order to keep up with Spider-Man.
Core Titles
Amazing Spider-Man #14
Amazing Spider-Man #14, variant cover Gabriele Dell'Otto
Amazing Spider-Man #14, variant cover Marvel Animation Spider-Verse
Amazing Spider-Man #14, variant cover Phil Noto
Amazing Spider-Man #15
Amazing Spider-Man #15, variant cover Simone Bianchi
Marvel Universe Ultimate Spider-Man: Web Warriors #4
Miles Morales: The Ultimate Spider-Man #10
Spider-Man 2099 #9
Spider-Man And The X-Men #3
Spider-Man And The X-Men #3, variant cover TBA
Guest Apps
S.H.I.E.L.D. #3
S.H.I.E.L.D. #3, variant cover Alan Davis
S.H.I.E.L.D. #3, variant cover Phil Noto
Spin-Offs
Silk #1
Silk #1, variant cover Skottie Young
Silk #1, variant cover Stacey Lee
Spider-Gwen #1
Spider-Gwen #1, variant blank cover
Spider-Gwen #1, variant cover Adam Hughes
Spider-Gwen #1, variant cover Kris Anka
Spider-Gwen #1, variant cover Skottie Young
Reprints
All-New Ultimates Vol.2: No Gods, No Masters TPB
Amazing Spider-Man Epic Collection #22: Round Robin TPB
Marvel Universe Ultimate Spider-Man: Web Warriors Vol. 1 Digest TPB