The course is good, I would recommend really focusing on understanding the electrical side of things and safety surrounding that. Solar fields are quite dangerous so it's good to learn more about them if you are going to work in solar.
As an O&M Technician with with 6 years of experience within this career field, I found myself astounded by the gaps in my knowledge which were graciously filled by this course. So many of us learn based off the tasks of the day, and the people above us who will teach us in the moment before heading off to the next task. Though valuable, hands-on experience is only useful when accompanied by informed explanations of why we do what we do. Whether experienced in the many facets of this career field in all of its myriad roles, or new to the exciting and steadily-growing world of PV Systems, this course holds a bounty of information and understanding necessary to work safely, efficiently, and help others understand what it is that we do, why we do it, and most importantly, how.