Think of Bitcoin like any other asset. The primary way to grow your holdings is to buy it. Trading can result in either gain or a loss, just like trading any other asset. Mining can be profitable, but unless you know what you're doing, it is just simpler to buy. As for faucets, they can give you free Bitcoin, but this amount is fairly trivial. Best of luck!
Faucets have been a waste of time for a long time, even if you were able to claim enough from them, how are you going to claim your earnings? The fees are very expensive especially for something with that many inputs and even if you could claim it you could have made more money by getting a job and then buying bitcoin directly instead of wasting your time in faucets.
This is definitely the largest amount of income earned through Bitcoin transactions. Just invest a little bit of energy in OKCoin, sell bitcoin at a high price, wait until the price goes down and buy bitcoin, so you can save more!