The first volume, as advertised, covers primarily region. While readers are entitled to read the volumes in any order they so please, it is highly recomended to read them in their arranged order. Indeed, religion has been selected to be the first topic for good reason.
Almost everything in Tellia can be directly tied back to religion in one way or another. The religious figures of Tellia, and their cultural impact, are perhaps what truly makes it distinct from all other continents. A minimum understanding of the mythology at large is often crucial to comprehending the nuances of particular conflicts, social structures, customs, and even what can only be described as outright miracles.
This volume aims to provide readers with that aforementioned "minimum understanding", and hopefully much more.