It’s National Punctuation Day! Polish your punctuation etiquette on the one-year anniversary of Jason Santa Maria’s smartquotesforsmartpeople.com.

And, why not buy his book, On Web Typography? Today only, use the discount code GETSMART! at checkout to get 15% off book no. 11!

If you’re feeling really pumped about punctuation, here’s a handy guide on how to celebrate today.