Based on the Marvel Previews #30, January for March 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 #16
Amazing Spider-Man #16, variant cover Ming Doyle
Amazing Spider-Man #16.1
Amazing Spider-Man #16.1, variant cover TBA
Amazing Spider-Man Special #1
Amazing Spider-Man Special #1, variant cover Adam Kubert
Marvel Universe Ultimate Spider-Man: Web Warriors #5
Miles Morales: The Ultimate Spider-Man #11
Spider-Man 2099 #10
Spider-Man And The X-Men #4
Spin-Offs
Silk #2
Silk #2, variant cover TBA
Spider-Gwen #2
Spider-Gwen #2, variant cover Sara Pichelli
Reprints
Spider-Man: The Complete Alien Costume Saga Book 2 TPB