The title of your thread is somewhat misleading as it looks like a statement of how you accumulate bitcoin and not knowing you are asking of how to accumulate bitcoin.
In the early days of bitcoin it was easy for you to earn some faucets and accumulate bitcoin but now I don't know if such a thing do exist.
Another way to earn bitcoin here in the forum is through signature campaign earnings. But the most sure way to earn bitcoin is to invest in bitcoin and take profit when the market price rises.