Make sure to get Presidents Choice all purpose gf flour, in the yellow box. It's fantastic. Just substitute it cup for cup on your old gluten recipes. I've used it for cookies, banana bread, muffins and even dinner rolls.
As far as eating gf the best is to just eat naturally gf foods like meats, fruits and veggies. You may notice that processed gf foods are MUCH higher in sugars and fats so eat those sparingly....or you could end up with a spare tire 🤣🤣🤣. I have Celiac Disease and have had to eat gf since diagnosis in 2012. Best of luck!