How much can you earn from website advertisements? -

I am completely new to websites, so sorry if this question is a bit vague!I want to know the different earning schemes - such as pay per click or any other ways to earn money off of a website. I also want to know how much money you can earn off each scheme, for example - one click.I know there are a lot of variables so I will give an example:My website will be a forum on health that has about 100 visitors a day and i want to make some money from the visitors through advertisements (or any other way).Exact or rough figures would be appreciated. Thanks!

You ll make MAYBE 20-30 cents a day.