A lot of ways of earing money with bitcoin, the most popular is faucets and signature campagins. Side ways of earing money is gambling and other unrealiable stuff.
The most legit way of earning without you engaging in risk is through signature campaign, I think it is the best job for the average people here in this forum. You can earn a decent amount if you know how to roll you earnings from signature campaign and I recommend to invest it in trading.
the best way is to earn from signature campaign and i dont advise people to invest it in tading as trading is more same as gambling, it has more risks if you are not experienced, so if you are interested in trading just invest a very few amount at start and if it is well and good then you may continue.