To return to the OP's Question - being a little older than the OP - I started taking photo's with the family camera - which changed pretty much every other summer holiday - so every 5-6 years - I started taking the photo's because I absolutely HATED being in the photo's. Even Now, every photo i'm in i'm looking miserable as sin because my Mam or Dad had taken the camera off me, and taken the photo instead of me. That hurt - because, lets face it, back then, a roll of film had a christmas tree on each end of the roll, and some photo's on the beach, or similar in the middle of the roll - at least once we'd moved onto a 35mm camera
By the time I was at Grammar School, I was into the outdoors stuff - walking, camping - you know, all the stuff that the Quasi Military Religious Indoctrination Royalist Junior Militia (Scouts) encouraged. A friend of mine at school was also into the same sort of pursuits, and had a Camera - I pestered for one for my 13th birthday, and on returning to school for the 3rd form, we were talking in our form-room (which happened to be a Chemistry Lab) about cameras when the Form tutor noticed, and asked us if we would be interested in re-starting the photography club. We didn't even realise, but the school had its own darkroom, attached to the form-room! From there, my learning took on a bit of a leap - because we could buy bulk B&W film, the chemistry teacher knocked up chemicals to soup the film, and print the eventual pictures - so not only had I more affordable access to film, but also "closed the feedback loop" a little - I learned to keep a notebook with settings from the (fully manual) TLR camera I'd been using (no EXIF's here) so I could work out WHY i'd missed the exposure. I practiced changing shutter speeds and apertures without looking, so handling the camera became second nature.
And I improved technically. Then, at 16, doing A Levels, I took General Studies - one of the best things I ever did - because I got LOTS of extra mini-classes - Music Appreciation - Art Appreciation and theory, Languages - all the things that kind of went by the wayside when you were doing a fully-tracked Maths and Sciences curriculum - but, from a PHOTOGRAPHY point of view - the main one was the ART APPRECIATION - lots of time sitting in the Art Class "mini library", leafing through books on Landscape Paintings, Portraiture, Still Life - but CRITICALLY - actual theory lessons on WHY a picture was so good - we'd pick a painting from a book and say why WE thought it was good (so, building the foundations of understainding and giving critique) and then the Art Teacher would go into greater depth - I was hooked. From there, I read some great books on Art and Composition, on perspective and on light and colour theory. Somewhere along the way, the light bulb in my head came on, and I understood what I'd been doing wrong all the time I'd been taking photos. I'd just been pointing a camera at what was there, and recording it - i'd not been looking at the scene, deciding what I wanted the eventual picture to SAY to the people who weren't priviledged enough to be there side by side with me and seeing it first hand - and work on what I needed to exagerate, or minimise, or otherwise bring out to make the recorded image SHOUT what it had spoken, or whispered to me.
At that point, I stopped being just a bloke with a camera, and became a photographer*
*that doesn't mean I'm any good as a photographer - but it does mean I'm capable of realising it, and explaining why everything I shoot is still s***.