The most important thing to know is that you dont have to be a religious class to worship any given deity in this setting. Most people are pious and try to worship something to gain protection/favour of some sort. You dont need to be a cleric to be raised in a temple, or whatever. Just make a character that you like and fits in the setting :) The most common form of worship is by offerings or sacrifices, usually of food or goods, burning them. but theres many ways! (see: General Worshipping)
This setting has a good amount of magic! However, most people are awed by people who can wield it or are adventurers of some sort, as most normal people stay within their settlement/temple/farm, and if they do travel, they actively avoid anything magical or the sort. Especially in towns and villages, there can be stigmas or suspicions around magic.
See also: