Tamsin was easy to relate to from the get-go. Most everyone has felt like an outsider at some point or had sibling issues (although not me, as I'm an only child) or wished desperately for some special talent. She has a bit of an edge to her, which I appreciate for the most part. She sneaks out to bars to drink beer and watch bands with her roommate Agatha. She's sarcastic with her family. In addition, she adapts well to all crisis situations, trying desperately to make things work out; even though she doesn't always succeed, it's awesome that she tries, rather than sitting idly by waiting for a savior.
My one big complaint about Tamsin is the scene where she smokes a cigarette in her room. Blah blah rebellion blah blah badass. I really hate smoking, because, well, it's awful. However, what really bugs me about this scene is that it has so little bearing on the rest of the book. It seems so out of place. Tamsin never smokes again, nor does anyone else mention her doing so. I can't help wondering if she was a smoker originally and most of it got edited out. Either way, it struck me as clunky and gross.
Gabriel was totally awesome. His talent (finding things) rocks. I seriously want one of him for my own, so he can keep me from having to turn my house upside down trying to locate my missing remote. (This happened this evening and the remote was, of course, in the first place I looked. Why I didn't see it, I don't know, but that's always how it goes.
Once a Witch was such a fun read and I am eagerly anticipating starting the sequel. If you're looking for an awesome summer read, definitely pick this up at your local library or book store!