There are many ways we can earn money using Bitcoin as the primary tools. Now, having said that, it would be better for you to find those ways by searching here in this forum and also using the power of Google. But if you want to get into a proven way then trading is the best option but it entails some study, some research and that knack for decision making any time of the day. You can also join programs that will do the trading for you but it does entail some risks too (well nothing in this life is risk-free anyway). Now, am suggesting that you do bounty hunting but first make sure that you have good followers in Twitter and friends in Facebook as well as good rank here in this forum -- these tools can be helping you. When you have the tokens as your prize you can sell them in exchanges by converting them to Bitcoin.