This book leaves a lot to be desired. It is great if you want to know where in the Bible angels are mentioned. It uses just about every translation of Bible out there, most of which are the poorer translations, ie. NIV, "the message" etc. Then again, for this price, you get what you pay for.
I've never learned so much about angels and demons. Knowing that Jesus sends his angels to help and protect us, even when we're not praying about it, makes me feel safe and loved. If you're not going to read another book on the subject, please read this! It has all you need to know, from the Word of God. And remember - Your heavenly Father loves you and is very proud of you! :)