My husband and a granddaughter have Celiac disease so I prepare a GF diet for them. Buy GF bread if you can and if they will eat it. My husband only likes homemade GF bread but my granddaughter likes commercial GF bread. Bisquick has a GF mix that is very easy to use for lots of things including using it for just plain flour to make fried chicken, gravy, chicken fried steak, etc. beside the recipes on the box. Betty Crocker has a few GF dessert mixes. READ EVERY label on every can. 3 Minute Oatmeal is the only GF oatmeal that I know of. Quaker Oatmeal isn't GF.
When you get the ingredients in your kitchen, cooking GF isn't difficult. Just educate yourself as to what contains gluten and what doesn't - such as malt. Good luck. It seems daunting at first, but the normal health that usually follows a GF diet makes it worth while. Eating out is usually limited to simple vegetables, grilled meats, and salads.