You're all so much cooler than me!
I had plenty of pocket money - I had a paper route starting when I was 11 (about $25/week) and then a job in the hardware store when I turned 16. I didn't shop much, mostly saved it. The closest mall was 40 minutes away. I remember picking out a few trendy things for back to school that I was very fond of. The first I remember - the Gap made these hooded long-sleeve tees, lighter than a hoodie sweatshirt, that we all had, with matching scrunch socks. Mine was a sort of cornflower blue. That was middle school.
By high school I had a bit more of my own style. It was the height of grunge and that fit perfectly with my existing look. I had an amazing green crushed velvet top with a low scoop neck, a few brocade vests, and several pairs of surplus cargo pants from the army/navy store. For my 18th birthday, while I was off at college, my mother got me my wish: steel toed Dr Martens, bought at Nordstrom (clearly a sign that grunge was mainstream!). My favorite place to shop was either the army/navy store (tie dyes! combat boots!) or the quirky stores in Northampton, MA.
Then in college I was more on the goth side, and mostly wore utilitarian black clothes (jeans, tee, Docs, big leather biker jacket).
I didn't get into the fashion world per se until I was 30. There were a few years in the late 2000s/early 2010s when rocker looks were everywhere. Think Kate Lanphear. J Crew (of all places) was putting punk studs on everything, and since it resonated so much with me, I started following fashion blogs. McQueen was a huge inspiration. The first really "fashion" thing I bought was these motorcycle jacket heels from Belle Sigerson Morrison. Still have them. They were inspired by McQueen shoes that were a bit too much look for me (find #2). I actually came across the McQueen shoes at a consignment store a few weeks ago and took a picture of myself wearing them, for the nostalgia.