OK, I'm gluten free and we mainly cook from scratch and I tend to have things like:
jacket potatoes - with homemade tuna and tomato sauce, or lentil sauce (doesn't need thickener if you bung lentils in!)
Chicken thighs and rice with lots of veg - grilleted peppers, red onions, with greek yoghurt (yum)
gluten free sausages + mash (rest of family have different sausages; I get much nicer Sainsbury's ones!)
Chicken casserole - you can get g-f cook in sauces and add lots of veg in. Have with rice or potatoes.
I also get gluten free food on prescription, including pasta, bread, crackers, pizza bases and biscuits.
The pizza bases are well worth having - stick in the freezer and good for if the rest of the family are having something gluten-y!
Prawn and salmon kebabs with veg and rice.
I find lunches the hardest - I usually have Ryvita corn cakes with ham/cheese. I miss lovely bread but that's life...
I have salmon and rice when ds's are having fishfingers - much nicer!
The other pain is when you want take away - our local Chinese will cook me King Prawn fried rice without soy sauce. Also be careful if you're ever getting chips from the chippy as they're often fried in the same batter as the fish and therefore not gluten free.
Pizza Express will do you pizzas if you take in a gluten free pizza base but I usually have their chicken salad (without the dough sticks and crutons!).
It's a bit hard going but you (have to) get into the swing of it - I'm nearly 3 years down the line now so give me a shout if I can help!