At first When  Bitcoin was introduced to the world there were three ways to get them  we could buy Bitcoin or someone have to give us or could get by mining The mining creates new coins and release them to the block chain .Staking involves the purchase of cryptocoins and holding them in a wallet for a period of time This is akin to a fixed deposit proof of stake also rewards you with extra coins by holding your coins will increase in number depending on how long you hold them in the wallet . Mining requires technical know how as well as computational power to solve the puzzles .