This lecture and workshop was held at E-Entrepreneurship Summer School at Zeppelin University, Friedrichshafen. The first part explains the differences and challenges between of a new idea driven startup and proof of concept startup (aka copycat). The first Workshop part is on the key assumptions and hypothesis of the business ideas in the course. The second part of the lecture is about the validation of the problem/solution fit using interview techniques. The third part is on the Minimum Viable Product concept and 6 different MVP cases. The second workshop is on developing a MVP concept for each of the business ideas in the course. Finally some fundamental quantitative analytics (split testing, cohort analysis) are explained.