I have coeliac disease and have tried many, many gluten-free baking books. The best I have found were those by Phil Vickery (Seriously good gluten free baking) and the River Cottage gluten-free book by Naomi Devlin. Both of these are British books and therefore use weights not cup measurements, so this may not be of interest to you. Some of the US books I've had some success with include those from Babycakes, the New York bakery.
In recent years I've stopped buying gluten-free cook books as they are often disappointing. These days you can buy excellent gluten-free flour mixes (saving you having 5 or more different types of flour taking space in the cupboard!) and I simply use these in normal recipes, substituting by weight. When I lived in the US I used Cup4Cup flour with excellent results for most things (and you can substitute by cup measure as the name implies). I also bought some fantastic bread mixes online from https://www.lucegfbread.com - makes really fantastic bread which I miss since moving back to Europe.