Canon sources of interest
Invocation of Azura
A Dunmeri cultist challenge pocal's summary of all the cults she participated in
The Real Nerevar
Written by a Telvanni Retainer - so this is the kind of work your characters might do, if you wish.
Realizations of Acrobacy
Story of a struggle between Telvanni Councilors. It's some six hundred years-ish in the future, but the general mindset might be interesting.
The Vagaries of Magicka
An excerpt from an apparent Telvanni mage guide book
