Really I am not understanding the Basic things of BitCoin? -- Layman question
Satoshi Nakamoto mined the genesis block in January 2009 and then he sent 10 bitcoin to Hal Finney who was one of the first to run the bitcoin core software. Finney then started mining hundreds of bitcoins in the days that followed. Satoshi then offered his peers equity in the form of bitcoins in exchange for them to work on the bitcoin core software, both developing and testing. So the original guys did not need to buy bitcoin, they were given it as a form of equity. Only in 2010 did the first bitcoin exchange MT Gox open in Tokyo and this allowed other people to buy and sell bitcoin using Fiat currency.