I don't remember the exact year when i found about Bitcoins, but yes it was before 2015, Bitcoin was around 400-500$ as far as i remember.
So basically i just googled, how to make money online, and there were some youtube videos demonstrating about some sort of BTC .
I got interest on it and basically in one day i did a whole research on how to make money with Bitcoins.
I also remember before trading cryptos, i was into gambling BTC, i thought that's the only way of Earning Bitcoins.
I used to play at Bitsler and PD at the initial days, and tried to collect at least 1 Bitcoins, so that i can cash it out and use in buying some Gaming consoles.
You're ahead for almost 2 years in my case where I discover and met bitcoin, I wish I had also that curiousity way back that time because I can say that a bitcoin price ranges $400-$500 I can afford to buy it at this price not like where 2017 it is much more than a thousand dollar value. In my case, I knew about bitcoin because my friend introduced it to me and at that time I am not active in investing and trading instead I am an active bounty hunter but since then I have learned about bitcoin deeper I gained interest in trading and investment too.