This book is a godsend for anyone keeping Ts. It's wildly informative- and it recieves something few other texts do. It's got aftermarket errata and corrections up on the author's website for information the hobby has learned since the edition was published. This is vital to a hobby as young and fast paced as tarantula keeping.
The text was incredibly engaging for an informative resource. I've seen some review cite that the text is dry and academic, but as someone who had to read some incredibly dry historical accounts in order to graduate with my bachelors, this could not be further from the truth. If you think presenting a largely impartial, factual-yet-funny guideline is too academic to slog through, this may not be the book for you.
However, I think if you don't read it, you will regret it and certainty jeopardize the life of your tarantula.