Some of the information in here may be spoilers as all of the primers are intended first and foremost for our writers and questers and will inform in-game books, dialogue, and quests.
A word of warning: the Lore Primers are exclusively dealing with the setting and background lore of the Tamriel we are developing as our shared setting. Their subject matters diverge, sometimes heavily, from the mainline games.
In the interest of keeping the documents focused on their subject matter, they do not address or justify divergences and focus exclusively on our interpretation.
About our Lore explains why these divergences exist and how our Tamriel is different.