Welcome to Eorzea and the RPC, Em! Hopefully I can help out on the lore front. These links should help get a good grasp on the general world building lore. If you have any more questions on something specific you're curious about feel free to ask! ^^
Eorzean Lore Starter Kit
-Racial Lore Compilation
-Class/Job Lore Compilation
-Hydaelyn Geography Lore
-Settlements in Eorzea Pre-Calamity
-Eorzean City-states' Political Structures Lore
-Eorzean Units of Time and Measurement Lore
Eorzean Lore Starter Kit
-Racial Lore Compilation
-Class/Job Lore Compilation
-Hydaelyn Geography Lore
-Settlements in Eorzea Pre-Calamity
-Eorzean City-states' Political Structures Lore
-Eorzean Units of Time and Measurement Lore