CertFirst Trainer delivered a great course. I have taken a couple of certification prep courses offered by the Marine Corps and this one takes the cake. The material was presented in an easy to follow and understand manner. It was very entertaining. In my Marine Corps courses the instructor would simple read from the book or from power point slides. This course was quite the opposite. CertFirst Trainer presented an immersive experience with the videos, resources, and his sheer wealth of knowledge.