There's not much that will take you back to your early days in Magic quite like teaching someone new to play.
It's an experience I had recently when a coworker called me up asking advice since he knew I played Magic. Turns out he just started playing and was looking for a way into the game. As someone who is more concerned with tournament results than the kitchen table these days, it was kind of a return to basics for me. There's something about looking at the inner workings of a thoroughly-casual Black/Green Nighthowler deck that was pretty fun.
When I first started playing, my first deck was a Red-Black discard deck that wasn't so much focused on the discard as it was just playing individual cards I thought were cool like Wrench Mind and Transguild Courier. It was terrible, of course, but it's how I learned to play and it was a lot of fun.