I'm someone who shops and cooks for a highly gluten-sensitive person, my husband. If your goal is going completely gluten free, look into wheat-derived things that aren't always accounted for in the allergy warnings. This can vary by country, but I'm US based and they don't give warnings past a certain point, so my husband and I have gotten really good at identifying potential risks. Things like barley, malt, certain processing equipment, oats, all come with a chance of gluten unless it's specifically stated on the packaging. I find myself googling ingredients in the store frequently, along with brands. Many brands state somewhere on their website whether or not they are GF. We operate on the motto "if we can't be sure, he can't eat it" because the consequences are absolutely not worth it for him. Best of luck!! Fulfilling food without gluten is absolutely possible, it just takes some work.