This is quite an old book so many of the concepts don't feel relevant to the modern dating and marriage culture. Some ideas seem to carry the older gender and social stereotypes, which may have fairly represented the kind of relationships back then, but seem problematic by today's standards.
The book also seems to be doing too much, including descriptions of the zodiac signs along with the exploration of sexuality, appearance of the spouse, timing of marriage, death of the spouse, and even aspects of Vedic astrology, among other topics. All of this in less than 150 pages feels like too much of everything without addressing anything in depth.
Books that briefly introduce a lot of topics can be helpful for beginners but much of the text here requires at least a basic understanding of the key astrology principles.
So, the book is too advanced for beginners and too shallow for advanced learners.
It's quite short though, so if you're curious, you can quickly skim through to see if you find something valuable.