Finding the right resources as you learn more about using essential oils, is a really important step. You can find reference material at Life Science Publishing, Abundant Health and Growing Healthy Families.
On www.pubmed.gov you can search studies that have been published on a specific essential oil. This search engine is free and is a service of the US National Library of Medicine.
My favorite site for essential oil accessories is Abundant Health. They have roll on bottles, small storage bottles and even dropper lids. Check them out!