The first angel book that changed my life was Ask Your Angels by Alma Daniel, Timothy Wyllie, and Andrew Ramer. I didn't really believe in angels at the time, but a friend introduced me to the book. It was through that experience my life changed as I began working with the Angels and seeing firsthand evidence of their influence surrounding me, if only I would listen and follow their direction. The book has exercises and meditations on how to align with the angelic energy field.
There's even a chapter on how to make your own angel oracle deck.
Enjoy your day with the Angels.