It's a webcomic by Vitor Cafaggi that plays with the idea of a younger Peter Parker, with him being bullied all the time, admiring Captain America... and there's a young Mary Jane too.
I'm not a big super-hero fan, so I must have missed many references. But it's still pretty darn cute.
It's about 150 strips. You can read them online or download the first, second and third seasons.