Wow that's awesome buddy, my story is similar to yours, i first used a computer in my school and learnt all the basics from that comp, but the only difference is i didn't build any website.I had access to a very old PC when I was at school. A local web company asked if I could have a look at their website, and then offered money because all school children know computers. I nodded, bought a book about html, and built them an improved site in Notepad in my spare time. I've been working in the web ever since.
Apparently not! I once attended this seminar where an established freelancer was taking people through the steps of carving a successful career online. I looked through the room and half of the attendants were probably in their late 20s or early 30s. That tells you that you can become anything you want, irrespective of your year of birth.Am I the only one who developed an interest after becoming an adult? I used to be intimidated by computers growing up, but somehow the older I got, the less scary they seemed and finally I decided to jump in and teach myself all about them. I haven't looked back since.
It all begins with interest because not everyone ever wants to deal with websites, SEO and/or freelance writing and so on and so forth. Up until this moment, there are people who have never understood what I do. I basically learned the ropes on my own though much later, I stumbled upon an awesome mentor.