I'll endorse what TMOB said, ASM....but only the first 350 issues or so!
Pick up the following trades/collections, and enjoy:
-Essential Spider-Man vol.1-8
This collects everything from Amazing Fantasy #15-Amazing Spider-Man....I think it's around 150 or so, when it stops. They are black and white reprints, but they are cheap. If you want color and have the money, you can pick up the Marvel Masterworks: Amazing Spider-Man, which collect the same stories in color, and if you just want the first 38 issues of ASM in full color and in one book, pick up the Amazing Spider-Man Omnibus.
-The Venom Saga
Whether you love or hate Venom, this sums up basically the entire Blck Costume storyline, and includes some great moments.
-Kraven's Last Hunt
Enjoy it. Seriously. You will never regret buying this book.
-Spider-Man: Blue
It's a retelling of sorts of the earlier Spidey years, which centers around the love triangle between Peter, MJ, and Gwen Stacy. VERY great story.
-Spider-Man/human torch: I'm with stupid.
Buy and enjoy the laughs.
Hope that helps.