There are many inexpensive TPB editions of original comics from the 60s and 70s, of important storylines, and of amazing artists like Romita and McFarlene.
You also might want to look at Ultimate Spider-man (Personally, I don't agree with all the changes Bendis made but it is new fan friendly:/).
You might try here. They usually have pretty fair reviews:
http://www.spiderfan.org
If you like black and white comics then get the essentials.
I'm very nit picky.I need my comics in colour.Fortunately you can get all the Stan Lee classics in the 'Marvel Masterworks' series.
I treasure them.
Also pick up Ultimate Spider-Man.Overall a good series but like Venom girl said it has got it's flaws.
But the pros outweigh the cons IMO.
Btw great screen name 😄 Do you know what a duodenum is?? 😉