Here I buy Mexican masa harina. It's very good, smells wonderful as it cooks too.
Yeast rising is pretty easy I find, if you're struggling to find a nice warm draught free place to rise it, use the microwave. Give the dough occasional 8 to 10 second bursts and it'll thrive. The microwave keeps it warm and moist quite tidily out of the way. We used to use the old warming oven, but cookers rarely have those nowadays.
I do manage the fluffiness of bread using gluten free flour but it misses the chewy bite, and it goes gritty rather than crisp and stale. Most gluten free flour mixes are based on rice and potato flours. Millet's fine for somethings, but I'm not fond of it for bread.....my husband commented that we used to use it to feed the budgie
and having grown amaranth and gone through the hassle of winnowing it, I reckon those South American's were starving to have to grow that stuff as a crop.
For cooking bannock though, the commercial gluten free flour mixes are fine. Pastry is easy outdoors in the cold, but in a warm kitchen, I rather wish I still had a cold scullery.
Bannocks are brilliant food
add whatever you have, or choose to have, and it'll be good food, from sweet to savoury.
M