If you are a fan of the Day One journaling app for OS X and iOS, check out this iBook from Shawn Blanc of The Sweet Setup. The book is well written and does a great job digging into the details of getting the most out of Day One. But the book is also beautifully laid out. Props to the team that pulled this design together.

Day One in Depth is $7.99, and you can read it on the iPhone, iPad, and Mac.