Once your page has got enough content, you are ready to publish it.

Open page settings, by moving the mouse over the page title and clicking on the settings icon. Afterwards, switch to Public page. You need to activate the public page first, before it will start working.

It is very important to choose a good title and a captivating description, as those will help in getting people to find your page in Google results.
Remember: the more people that visit your page, the more income you are likely to generate.