As everyone knows, rules are made to be broken. Though it is a tired cliché that you must know the rules before you can break them, it is nevertheless true. This guide will show you the rules, but it is up to you to decide what to do with them.

A simple online handbook to help you understand how to properly use some punctuation in American English, American punctuation. British punctuation is slightly different, as explained here. It becomes super useful for content writers and well as for anyone wanting to geek around and learn more about micro-typography.