Matthew Koster has transitioned from being a teacher from 2010 to 2012 to founding an edtech startup in 2013. The document provides advice for others considering moving from being a teacher to becoming a "teacherpreneur" and launching an education technology business. It recommends researching customer needs, building prototypes, and getting customer feedback. It also stresses the importance of writing a detailed business plan that includes financial forecasts, protecting intellectual property, understanding the business model from the bottom up, and launching the business despite inevitable mistakes.