I would love to test recipes and proofread the book (I am a linguist). I have never baked with sourdough but very interested in starting with it. I have a regular oven and can also try recipes in a bread machine. I could test 20 recipes in the machine but will try to make some by hand too. I have einkorn, whole wheat, oat and buckwheat flour and the store where I shop has other flours too that I am interested in testing.