There used to be a greatThoth site called the Royal Road which could be found here: www.tryskelion.com/preface.htm does anyone know what happened to it?
It is still in tryskelion.com but you need to search for it. When you enter the main site click on the third button on the left menu (the Arts) and from there on the right submenu, "Tarot".
Caridwen, thanks for asking the question, and Fyreflye thanks for posting the links! I will be working with the Thoth soon (newbie to this deck), and this looks like a great resource.