The EDS advocacy site, Ehlers-Danlos Society, is where you can find overviews of EDS along with more detailed information. Also, the site includes updated research presented during the annual conference.
For an overview of genetic symptoms and diagnosis, the National Institute of Health (NIH) has published a “book”:
There is also a long PubMed PMC article listing symptoms in great detail:
For all diagnostic criteria of this multi-faceted disorder in one place, here is a document created by another Inspire member:
Pain arising from physical issues of EDS
EDS and Anesthetics – People with EDS are often extremely resistant to local anesthetics