This is what I think...

I don't think someone necessarily needs a gluten free cookbook in order to make gluten free things.  As long as you know what you NEED it shouldn't be a problem.  Allow me to explain myself.

Lets say you have an aaamaazzing recipe...for lets say, oh, chocolate cake.  Or your best friend does.  An amazing recipe that you obviously can't eat.  Or if you do, you'll be paying major consequences...believe me. 

Any who, so you have this amazing recipe and you figure you can't use it anymore just because the staple element is flour.  Well who said you can't use the recipe anymore?

You simply replace the wheat flour with your "gluten free goodness" flour.  Simple as that.  Add your needed xanthan gum to go with it, and hey! you've got wondrous food melting in your mouth. 

You have your basic gluten free flours.  A combination of rice and tapioca, result in a fluffy cake or scone.  Brown rice and teff flour, make some good pancakes... I could go on and on when it comes to flour combos. 

But as for me, I like to stay in touch with my good friends, Bob and Sofella.

I hope you come to love them as much as I do.  We'll talk more about flours later on.  But lemme just tell you this: Bob knows how to make a pretty darn tasty chocolate cake and Sofella knows what a REAL cookie tastes like ;-) beeeliieeve me.