This is a great textbook if you're new to Directing and looking for a txt that covers the totality of directing, not simply something more specific, say, a text on directing the actor (the secion covering this is only about 10 or so pages). This is a very broad based text. A directory to directing.
You can't go wrong with this but if you're seeking something more fine tuned, you may want to sharpen your search. This books if for those who want to be briefed in all areas of directing, not just one specific area.
A good starter book for new directors.