In case you haven’t heard, my friends David Sparks and Eddie Smith have released another book in David’s Field Guide series: Markdown.

With 130 pages and 27 screencasts, plus audio interviews with myself, Merlin Mann, Fletcher Penney, Federico Viticci, and Gabe Weatherhead, it’s pretty well packed with information on basic and advanced Markdown, as well as Markdown workflows and how to put it to use for you.

The book — in all of its multimedia glory — is available for iPad on the iBookstore ($9.99 US). There’s also a PDF version for those without iPads, but if you have one, definitely get the iBook version.