I loved this book. Assuming that one is familiar with some Hebrew words, and at least know the significance of the Torah, the Talmud, and Kabbalah, this book is mentally and religiously stimulating.
The Rebbe does not go into so much detail that one wonders how he got his answers, nor does he cover too much ground, so that one wonders where any connection is.
Personally, the style of this book works for me. If one likes Judaic studies, and likes the style of the Rebbe, then this is a good book for you.