Doreen Virtue frequently hears this question at her workshops, and usually points them to her book Healing with the Angels. Yet, even that book is a bit advanced for newcomers. One morning she clearly saw and heard the title Angels 101, and Doreen knew that the angels wanted her to write a very basic and elementary book. 
Angels 101 is a nondenominational overview of who the angels are; their role in various spiritual texts and religions; the ways that angels help us and how to call upon them; information on guardian angels, archangels, and departed loved ones; and frequently asked questions about the angels. No matter where you are on a spiritual or religious path, this book is sure to deepen your understanding and love of the angels—and it makes the perfect gift for someone new to these concepts!