First time I heard about bitcoin from one of my friend because there was no money with me and I was doing a day job and my earning was not so good so my friend told me to join bitcoin because he was using it from a long time and he became a rich just because of bitcoin so I told him to tech me about bitcoin and when he tech me about bitcoin then I start earning and believe me just in one month I earn a lot of money then my day job so I quit my day job .