I think the best source of bitcoin nowadays is a signature campaign. In sig campaign there is a lot of people who get involve here because you don't need to take out your money. You don't need an investment for you to earn a lot. Also, signature campaign is the best way to earn a lot because it is trusted and legit.
- The best source to earn bitcoin, I think it is trading although it is quite risky but the income can be said to be huge, if we have accurate predictions about the market. In addition, I also think that mining is also a good place to earn bitcoin but it depends a lot on our capital, and competition in this field is fierce, hopefully we should researched before joining this field