This is a beloved tale in Spider-Man noir, and with good reason. Here Spider-Man meets Timmy, his #1 fan and makes his day (Or night) by paying him a visit and showing him first hand how his powers work. It's the greatest experience the boy can ask for and the adventure of a lifetime, which turns out to sadly be a short one as poor Timmy is terminally ill.
After you've read this be sure to find a copy of the Marvel 1991 Holiday special where Timmy's brother gets a chance to thank Spidey for making his brother a little happier before he died.
This is one of the most emotional Spider-Man comic stories I've ever read. If you can find it, check it out.

(#1) Spidey battles Thunderball, who has both the Asgardian powered wrecking ball & the Wrecker's crowbar, along the Long Island Expressway, which ties up traffic to the dismay of the drivers. He uses a local electrical power station to defeat his opponent. (#2) Spidey visits a boy, Tim, who collects Spider-Man memorabilia, after reading an article about him in the Bugle. Spidey answers all of his questions & even reveals his secret identity to him. Afterwards, we learn that Tim is dying from terminal cancer. (Cover date: January, 1984)