I guess technically for me it began with Alcatraz. I was a kid, I stumbled upon it, I loved it. But I was really young and knew next to nothing about this concept called 'seeking out other books written by the same author', so that ended there.
Cut to middle school, where I happened across Mistborn. I remembered hearing somewhere (who knows where) that it was good, so I tried it, loved it, finished the series, and sought out more. After reading everything I possibly could, I just wanted more. It wasn't until high school that I was able to get my hands on Elantris and the Stormlight Archive, but once I did I had officially decided that Brandon was my favorite author.
Some time later, I found 17S. (I think through the Coppermind.) Not too long after that, I got an account. And now here I am.