Delft Method Module 1 starts from zero. With the Delft Method, you learn Dutch faster than with the other courses, but you have to prepare each class studying 2-3 hours. The Delft Method has a minimum of grammar and you have to be able to study independently.
A1-A2 course starts from zero as well. This traditional course has more grammar, but you need a laptop or tablet as well. You must also study for two hours per lesson.