There is no dearth of ways to make money online.
Here is some ways.
Adsense is a program by Google which provides website owner to place relevant ads on their websites and make money.
Affiliate marketing is another way to make money online. Website owners place links which lead people to marketplace. Through this one becomes an affiliate and gets commission on sales.
Online Advertising is no different than regular advertising. If you own a popular website others can pay you to place ads on it. You as a brand owner can places ads on other websites also.
In future we will share more ideas.