The second half of this particular volume is more engaging than the first, mostly because we get the return of the Green Goblin, one of Spider-Man's better villains. Plus, there's a little twist with that villain. Granted, it's one you can probably see coming, but it still makes for fun reading. 

It's interesting reading these earlier comics all at once, because you can definitely see trends and see how they're evolving a bit. It's great getting this background of Spider-Man as well.