If I had simply found this online, I would have been pretty happy to stumble upon it. It's always useful to see how other DMs have written their notes, and it helped me structure my own.
However, I did not just find this online. It's presented as a product worth paying for, with a professional-looking cover and a promise of notations and summaries meant to guide you through running the adventure. It is not really that. It's just... prep notes. Notes which are quite useful, yes, but there's not nearly as much advice in here as it seems to be presented as. It's an abbreviation of the adventure with a thin layer of commentary. Some of that commentary is just the author's DM preferences and some of it is just his ideas half-formed ideas for how he might run an encounter - ideal for DM notes, but it's a stretch to call it advice.
To top it off, it clearly hasn't been edited at all. There are quite a few typos, fractured sentences and other editing errors. The formatting is slapdash, and little thought has been put into how to present the information in a useful and attractive way for others. It reads like what it is - a DM's notes, in his notebook, for himself. The fact that some extra stuff is tacked on doesn't really change that core.
And that is not a bad thing to have! I did manage to find some use from it, and judging by other reviews, other DMs found even more. McGovern is clearly a confident DM and has his own process from which any DM, even an experienced one, will be able to learn from. Some might even pay for them! But it is not a complete product or guide, and it seems to be presented as one.