The simplest way to increase your bitcoin is investing them in projects which pay a higher interest rates or you can indulge yourself in trading in the market with your funds.The other way is you earn by working in different ways like joining campaigns or writing blogs over internet and get paid in btc or work in company that pays you salary in the form of Bitcoin.There are several ways and it is you who has decide the best suitable way to increase your money with your knowledge and skills.