There are too many ways to state them all in this one post so here goes my list.

Using PTC websites (paid to click)
Using GPT websites (get paid to)
Using Gambling websites and trying to get up to a decent amount by using their faucets.
BTC faucet websites (takes a real long time)
Lending coins with interest (make sure the person is trustable)
Trading
Sig Campaigns
Finding a job
hacking people? (not recommend)

these are just a few and some of them are risky ways but If you have patience, then you are sure to make some money.
Good luck!