Register in bitcoin and go buy some BTC and invest it so your money keeps on having some interest.
Register in Bitcoin? Bitcoin doesn't have registration in order to qualify mate. You must be pointing out the Exchanges, doesn't suit at all.
invest your money in the form of the bitcoin, I mean buy some bitcoin and hold it for a time when the rate high use them, another best way is to buy bitcoin and invest them in project it will generate a high income for you in future. the investment in bitcoin will also give you an extra amount of the money which will be raised in the value of bitcoin