There are quite a few premade foods you can buy. This will help you at first.
Dinty Moore canned stew is gluten free, and labeled gluten free.
Most Hormel chili is gluten free. Most hot dogs are gluten free. I slice up hot dogs into a bowl of chili, and sometimes add a little mustard on top. Hormel has a list of all their gluten free products here.
There are two Weight Watchers Smart Ones frozen dinners that are gluten free - Chicken Santa Fe, and Cranberry Turkey Medallions.
Corn tortillas are generally ok. I prefer the white corn tortillas. I put refried beans and cheese on them, fold them, and heat them in the microwave. I eat them with lots of salsa.
Lots of lunchmeat is gluten free. All Wal Mart products are clearly labeled. I get their ham and roll it up around cheese to make “sandwich” rolls.
I’m not suggesting you live only on canned chili and such, but these things will really tide you over while you learn. I’m a lousy cook, so I got one of those little George Foreman style grills. Grilled chicken, grilled steak, some veggies or a salad, that’s a pretty easy gluten free meal.
It’s also easy to make “stir fry” by heating up a bag of frozen stir fry veggies, grilling meat, then slicing it into the veggies. La Choy soy sauce is gluten free, though sometimes I just skip that and sprinkle on white pepper and ginger.
I have found this message board very helpful. I refreshed my memory about which Weight Watchers dinners were gluten free by searching there.
I also belong to the SillyYaks email group. It’s great, but be sure to sign up for the digest, not individual mails. Sometimes this group has 100 or more emails a day.