(Full disclosure: I did get a free review copy of this book from the author.)
Magic can be one of the trickiest tools in the writer's box. On one hand, it can be the perfect peg on which to hang an entire plot, or indeed, an entire world. Exploring a magic system can be the foundation of an ongoing series, and portraying its impact with the characters can keep readers riveted. For that matter, magic has one of the largest opportunities, of any power source, for jaw-dropping feats of description and wonder, and is unmatched in terms of versatility and potential.
But it can also be one of the fastest ways of getting a reader to roll their eyes or just get bored with the entire idea, to say nothing of growing frustrating or tiresome after awhile.
How then to find a balance and keep the reader engrossed with the upsides of magic? Rayne Hall offers quite a few great suggestions in that regard, from reminding us of the basics ("magic is defined by its rules," "always remember that magic makes sense in its setting,") all the way to more advanced or specialized suggestions (from "erotic magic" to tips about different varieties of magic and suggestions for how to increase dramatic tension.) Finishing each chapter with a simple synopsis of "Do this/Don't do that," her advice is both sound and easily approachable.
The only real complaint that I have is one that anyone who's researched magic for any length of time might guess. Magic is such a sprawling power source, with so many variants, rules, flavors, and mutually exclusive options, that no one book can hope to contain all of it. Rayne knows this, and she gives a perfectly workable primer here, but it still leaves me wishing that she could have offered just a bit more specificity. As a short example, she does talk about "High Magic," essentially ritual magic, but she doesn't specify how- or if- it differs from Hermetic Magic. Considering that is one of the foundations of our modern understanding of magic, that is a bit of an oversight.
But again, there are a lot of different variants of magic, and no one book can hope to cover it all. Nor, indeed, can one book describe all of the ways that magic can- or should not- be used in fiction. Thus, like her previous book that I reviewed ("How to Write Fight Scenes,") this serves as a great starting point for writing magic, and points you to other resources for more in-depth research. Thus, for starting writers and for people who want a refresher for how to incorporate the mystical into their writing, this book is a fantastic place to start.