Hi and Welcome!
It can feel overwhelming at first with the lifestyle change...with time it becomes second nature, so hang in there. I was diagnosed Celiac 2 years ago...it really does get easier. I am married with 4 kids...one of my children also has Celiac Disease, but the rest of the family doesn't. Here are a couple great tips people gave me that helped...
1. Buy a "Gluten-Free Shopping Guide"...I bought mine on Amazon. This helped tremendously when I grocery shopped but was unsure about reading labels. I was able to take most of my regular recipes that I cooked for my family and make them Gluten-Free simplyby altering ingredients.
2. Keep your own butter dish in a cupboard so kids don't accidently use...now I label my own mayo, pbutter, etc with big gluten-free on the lids & my kids know not to "double dip"...however, when they do forget, we laugh it off(and I grab a new jar for myself next time I am at grocery store)...this change was new to the entire family
3. Make sure you have your own toaster...I bought a cheap one in a different color from our "regular" toaster...
4. You will eventually find flour mixes that you love...trial and error...I will say, my favorite is "Pamela's Pancake & Baking Mix"...it makes fabulous muffins, pancakes, cookies, etc.
5. You mentioned dairy...I also had to stay away from dairy for a while until my gut healed some...each person is different, but I do know that is pretty common
6. I love the advice above to "be careful, not paranoid".
Be patient with the journey!