These are a few of my favorites, although, all of the authors have written books that are great for whatever level of learning you are at this moment. 

Law of Attraction - Esther and Jerry Hicks

Getting into the Vortex Guided Meditations CD and User Guide

Esther and Jerry Hicks

Chakra Cleansing (with Meditation CD) - Doreen Virtue

Happier than God - Neale Donald Walsch

Conversations with God - Neale Donald Walsch (all 9 books)

You Can Heal Your Life - Louise Hay

The Five People You Meet in Heaven - Mitch Albom

Practicing the Power of Now - Eckhart Tolle

A New Earth - Eckhart Tolle

All Books by Doreen Virtue

The Messengers - Julia Ingram and G.W. Hardin

The Lost Sisterhood - Julia Ingram

Zero Limits - Joe Vitale

The Key - Joe Vitale

The Awakening - Joe Vitale

The Time Keeper - Mitch Albom