I heard it back in 2011 where in there was a huge hype of mining Bitcoin using GPU's and there were numerous facebook groups where they posted they rigs and also had many tutorials for other to follow or even customize their rigs in order to work better.
I heard about bitcoin talk 1 month ago from my friend , he told me about how to work in bitcoin and share some video about bitcoin talk.
I also heard it from a friend of mine he was always busy on his pc doing something so one day I asked him what he was doing and he explained it to me.
So then I decided for my self to also start with Bitcoin and now I am here making use of it.