I'm gluten free. You can pretty much sub a good gluten free flour for regular flour in any good recipe, HOWEVER.....you have to add xanthan gum if you want it to rise. Once you buy a bottle, it will have instructions on the side for how much you need to add depending on what you are making. Gluten free things just don't rise as well as wheat based no matter what you do.
If you buy a AP gluten free mix, it may already come with some type of gum that will make it rise. (guar gum etc)
Also know, if you buy any gluten free flour that contains bean flour, it will taste like beans. I like to mix different kinds of gfree flours to get the best end result. Especially rice flours, tapioca flours...etc. This is where it gets expensive for non gluten free bakers. You might consider buying a gluten free cake mix like Pamela's instead.
You also have to be very careful of cross contamination in your kitchen.