Book is a great reference of scents. It begins with the use of scent and how inhaling certain herbs and essential oils can effect our moods and outcomes in life. It has different methods and techniques to gain specific results with aromatherapy. Includes recommended aromas for days of the week, seasons, lunar cycles, elements, planets, and zodiac. It also contains a list of oil and plant distributers for your harder to find items. Also includes a pretty big reference guide of the aromas and their uses. Very handy to have around. I know I will be referring to it time and again.