@Honkman and @BeeZee Thank you for the refence to the books and thank you @Anna N for the links. I haven't had a chance yet to study them but I will. Today I went to Bulk Barn and bought 12 different grains. They are: Amaranth, buckwheat groats, bulgur, farro, cracked Freekeh @Okanagancook they didn't have whole) Kaniwa (anybody heard of this?), Kasha, millet, red quinoa, teff, wheatberries and spelt.
I put them all in evernote with nutritional values and basic cooking instructions for each. I have already learned that amaranth gets gummy and congeals if you allow it to sit around so that doesn't look promising to use in a grain bowl but likely will work for cereal. I only bought an eyeballed cup of each so if I don't like something, i won't have wasted much in the way of $$$. I see @kayb that you have used barley. For some inexplicable reason, i have a real dislike of barley so didn't get any. Weird, too, because we ate it at home and while I wasn't nuts about it, in true Dutch immigrant fashion, we are what was put in front of us, without complaint.
I'm looking forward to playing with these. Fun times ahead. Any advice appreciated.