This guide was an optional reading material for one of my BH classes. At first I wasn't sure what to make of this guide, how to use it and what its usefulness is. It isn't necessary for reading Biblical Hebrew and won't do you any good if that's all you want to do. But it's useful for folks who want to go beyond the text itself. The more I read BHS and the more I use the Masoretic notes and the critical apparatus, the more useful this little book becomes. Also, for an interested reader, there is a pretty good bibliography so one can dig deeper if desired.
Specifically, it covers verse divisions (soph pasuq, seder, etc.), special pointing, the Masora (it has brief notes on the Masoretes, Masora Finalis, Masora Marginalis -- both Mm and Mp, explanation of the critical apparatus and accents. In addition, there is an index of abbreviations and symbols in Mp and a useful list of Latin words used in BHS with English translations. For the price this is a good buy and certainly a useful tool for the interested reader.