That’s a series where people learn how to use magic, not a thing about “how it works”. The series is very careful to never explain anything about the mechanics of magic, other than “incantations are a thing unless they aren’t, willpower maybe matters, and quality of the magic wand is relevant except when it isn’t”.
What fantasy world can you think of where most people bother to learn how magic works?
Harry potter, they all go to wizarding school (not that HP should be used as a reference for world building…).
That’s a series where people learn how to use magic, not a thing about “how it works”. The series is very careful to never explain anything about the mechanics of magic, other than “incantations are a thing unless they aren’t, willpower maybe matters, and quality of the magic wand is relevant except when it isn’t”.
The Infernal City, Greg Keyes. It’s set in the elder scrolls, where knowing a spell or two is the norm.