If you are running a small business the principles covered in this course are great. I’ve not had a chance to review any of it because it’s just starting but i’m going to give it a go – phil 

Learn the key tools and steps to build a successful startup (or at least reduce the risk of failure). An introduction to the basics of Steve Blank’s famous Customer Development process, where entrepreneurs “get out of the building” to gather massive amounts of customer and marketplace feedback, and then use that feedback to continuously iterate and evolve their startup business models, improving the chances of success at every step.

via Udacity – How to Build a Startup Course (EP245).