Hashtag? Whaaat?

A hashtag is a term, prefixed by the # symbol, that helps people categorize messages in Twitter. In Chapter 1 and Chapter 3, we explain how they work and how you can use them in a bunch of cool ways.

If you're already comfortable with hashtags, we encourage you to use this one if you want to twitter about our book. We'll be excited to see messages about how the book has helped you, but we truly welcome posts that point out things we can improve or add. If we use your tip in a future edition, we'll credit you, so don't hold back!