A good place to find information on thyroid, and other endocrine
disorders, is www.thyroidmanager.org . Its highly technical, but it is
pretty readable, even for the average lay person.
Fairly easy to search also.

Written by doctors, and is generally accepted easily as a resource by our doctors, in discussion.

True, much concerning thyroid is still under debate, as so much is not yet known. Even on this site, most of us will find things we disagree with. But ya gotta start somewhere. ;)