*cough* I'm not as old as some of the grizzled ones here - some of whom have been doing this since I was born *cough cough*
Fooled around with electronic music and computer music a bit in college in the late '90's. Had always been fiddling with cassette recorders and such, and they had a four-track cassette recorder in the lab there.
In November of 2001, I made my first on-location recording: a girls' youth choir doing a little Christmas CD for the congregation. Four mic's live to 2-track. Sounded good, considering. Wish I still had a copy.
Shortly thereafter, I fast-tracked my way through a Music Electronics program at my local Community College. At the time, I was performing professionally with a Classical/Baroque group and there was a gentleman who showed up and recorded the concerts - he set up his Schoeps ORTF mic and his PortaDat and did his thing, and I thought that looked like an awesome way to make a living. He was always very gracious in answering my questions.
Found a book in the 66th Street Barnes & Noble by Bruce Bartlett called "On-Location Recording Techniques" and wore it out - studied the section on stereo mic techniques voraciously.
In February 2003, I bought an ADAT machine and a pair of Shure SM94's off the studio where I was interning at the time. Lugged those out with a Mackie 1202 and a CD-R recorder (I believed in backups from the start) and recorded a chamber group. Recording came out well. A few months later, I did my first paid concert recording in the same venue. Never looked back.
What an insane journey it's been since then.