I found this book complimented my other books well in learning Tagalog. There are many gramatical explinations and good vocabulary builders. The focus is not pure memorization but to develop your skills in the language and understand how it works. The text is probably better for a more structured learning environment. It is not geared towards the "Teach yourself" learner.
The book cover isn't clear about the target audience, in my own opinion this book is a practical guide for a Teacher of Tagalog to do lesson planning. It is not suitable for someone trying to study by themselves. It is though , a useful source of dialogue, which compliments study of a more appropriate book.