I heard it firstly on internet, but at that time I was not that interested into it, but then my friends told me and explained me the benefits of bitcoins, and he also told me how we can earn good money out of it, then I started to explore information related to bitcoins.
It is always like I am not interested at first, that is what I always read upon learning that bitcoin exist. Because maybe that is real perception. We do noy trust easily what we saw in the internet. The fact that earning or having digital currency is something beyond our imagination.