I was only ever an oil burner technician, so had very little knowledge, or even experience with the system side of things. The course is good and I learnt a lot from it. It is cleverly thought out and makes you think about things that I certainly never did while servicing burners.
The second part of the course I'm told is going to be a lot harder, although I personally didn't think part 1 was all that hard.
The "controlling your heat source" module was easy in my opinion. It takes you through the various ways of controlling modern day systems with particular concentration on advanced weather compensation and choosing the right curves.
On the whole the course is good and I know a lot more now than I did a year ago but as I mentioned by trade I was just a humble service technician.