Click on a letter for the concept and item index or the indexes for Books, People and Orgs. You will then get an alphabetical "sub-index" for the index you selected.
If you click on the index entry you will get a"google search index". Click on the [] marker and get a specific google search.

insomnia* 8, 29, 41,
insomnia* (|), (|), (|),
insomnia* []
Click on the page number for a Take Charge of Your Body reference or the (|) marker for a Dr. DeMarco Answers Your Questions reference.