Here's an informative - and hilarious - comic from The Oatmeal where he discusses something about the word "literally".
He states...

Now that you know what "literally" means, continue reading the rest of The Oatmeal's funny comic so you'd learn how to use it. Go to The Oatmeal - What it means when you say "literally".
Cheers!
Other comics relating to grammar and punctuation from The Oatmeal:
What it means when you say "literally"
When to use "i.e." in a sentence
How to Use an Apostrophe
Ten Words You Need to Stop Misspelling