How to eran money upto 2500$ per month

Mostly! My friends asked me question? how to earn money online?
And my answer is always divide in to 5 parts

1:
Fiverr:
Fiverr is one of the best online earning website in which you sell your services start from 5$ to 500$,so
if you have any skill ,like web development website designing ,photo editing etc,so you can earn more
then 2500$
2:
Upwork

3:

freelancer

4:
Amezon turk program

5:
google admob: