How do I password protect a page or post?

How do I password protect a page or post?
Password protecting a post or page is quite simple. All you need to do is look for the "post password" or 'page password" sections on the right-hand side of where you write a post or page and enter a value into the text field. This value can be whatever you want it to be, but if you want others to see what is in this page or post, you will have to share th password with them.