This book describes the grammar of biblical Hebrew without vowels and other niqqudot.
Tanakh (Hebrew Bible) was initially written without vowels. Reading it with all possible vowel combinations produces many different senses which the God's word has.
We can insert different vowels into Tanakh and get different senses. Much simpler we can study and use Tanakh without vowels at all.
This way we do not need to study rules of biblical Hebrew related to vowels and other niqqudot. This simplifies very much study of biblical Hebrew. We just do not need to deal with vowels.
This book is intended to be used as a studybook and a reference of biblical Hebrew without niqqudot.