There are so many books out there about essential oils and aromatherapy, both good and bad, so it isn't easy to work out which ones are good.
A book by Jade Shutes and Amy Gulper called "The Ultimate Guide to Aromatherapy" is one of the good ones. Written with the home user and beginner in mind, it covers all the topics one needs from chemistry to oil selection to oil descriptions to simple recipes.
As you know, I love to share safety information to help you use your oils better, but when I read the safety aspect in this book, I loved how they summarised the safe of essential oils so succinctly.
The top rules when it comes to safety are:
Essential oils are safe when selected appropriately for the individual or purpose of the product.
Essential oils are safe when the appropriate method of application (body oil, steam inhalation, baths, etc.) is chosen correctly for the individual or purpose of the product.
Essential oils are safe when the correct dilution of the essential oil is used.
Essential oils are safe when the individual has the appropriate level of knowledge and experience with each essential oil they are using
If you are new to oils, consider adding this book to your collection.