TUTORIAL: Write in Elvish. This is the most detailed and thorough I've ever seen. Also, check out a lovely book called "The Languages of Tolkien's Middle Earth". It explains elvish (Sindarian and Quenya), Dwarvish, and others. Written by Ruth S.
The Laws of Magic The Laws of Magic are not legislative laws, but, like those of physics or musical harmony, are actually fairly practical observations that have been accumulated over thousands of years. These laws describe the way magic seems to behave.