This is how I go to my happy place.
I've lost my original D&D Basic set, but this is a first printing that I bought at a game store about ten years ago.
The Keep on the Borderlands module belonged to someone named Randy Richards, who wrote his name and phone number (as we so often did in those days) on the cover.
Yesterday, I read this Player's Book for the first time in over 20 years, and even played the solo adventure within. The Rust Monster is still as hard to beat as I remember, but my fighter (Thorin, a name I used all the time when I was a kid thanks to The Hobbit) managed to defeat it with some creative trips back to town to replace his armor and weapons, just like when I was a kid.
I'm going to read the Dungeon Master's Guide next, and then reread the Keep on the Borderlands after that. When I'm all done, I'm going to run B2 for some friends, using just the Basic rules I have here.