I have been looking into the ins and outs of baking allergy free and thought I'd share some of the resources I've come across.
-Cook It Allergy Free has some tips for avoiding common mistakes and mishaps on their page. There are helpful tips like avoiding sticking, giving more rise to your baked goods, and getting accurate measurements.
-Gluten Free Goddess, aside from being an all around great resource, posted some tips for gluten free baking and baking substitutes.
-"The Allergen-Free Baking Handbook" looks promising and you can get it on Amazon.
-"Learning to Bake Allergen-Free" also looks like a good book to own and can be purchased at Amazon as well.