I knew of comics from an early age, but my first comic was Spectacular Spider-Man 197
in 1993. I was 8 years old.
I saw the comic in the grocery store on the rack, and the cover was so rad I couldn't believe it. I told my mom I had to have it, and she said I could buy it myself if I did some chores. So I swept the driveway and front porch for my six quarters ($1.25 plus tax, I'm sure some of us remember when it was cheaper, but for me I always compare comic prices back to that first price point I was introduced to).
I read that comic to death, and when the cover fell off, I re-stapled it, although I didn't realize they stapled it with the pages flattened open, so I stapled it all weird.
From there the rest was history, I was buying comics every week with my scraped together money.