Like other reviewers, I'm a big fan of the 37 signals' books like Rework.  But what sets Rob apart is providing actionable advice to get started on.  He lays out how to get started and actual steps to take.  I sincerely appreciated the focus on marketing and getting started early.  For those of you that assume that you're going to launch your product and just wait for sales, think again!  I can't recommend this book enough.  The audio version on Rob's website is excellent as well!For those that look to further their education, I also highly recommend checking out the podcast by Rob Walling and Mike Taber titled "Startups for the Rest of Us".