1 bitcoin costs a lot of money, it is a very hard thing to make knowing that the value of bitcoin is still growing up until now. Try joining bounties but I am warning you, there are a lot of scams at the moment so if you are going to join on a certain project, make sure you check the whitepaper and the background of the team so that you can ensure if it's worth to trust. Trading can also be a good one but you are required to monitor the market value always and never miss out good opportunity to buy or sell to gain much benefits from it.