Spell Books
By writing down the incantation of a spell in a book and signing it, your experience with that spell can be passed down to others. Your current uses of the spell are saved with the book, and anyone who reads it will get a boost of their uses of the spell by half the difference between the amount in the book and their current amount.
Through the /kit command, a server op has access to many pre-written spell books included in this plugin. These spell books explain the effects and usage of the various spells. Every spell in the plugin is mentioned in these books, and a small amount of experience with the spells is gained by reading the book.