@JPB,
Yogurt, I'll tell you later. Right now keep on what you're doing.
We used to make our own yogurt when we were hippies. (We made our own goat cheese (one of the yoga students paid us in goat milk) and tofu. Yes. I know (or knew) how to make tofu.
Yogurt is easier. It just takes a long time. Four hours plus time in the fridge plus time (two hours or so to drain off the whey) Phew. But, the yogurt you get is just the right tangy-ness.
One thing: good old Danon Plain makes a really fine starter, you don't have to buy anything special.
Joe(glad you are doing so well)Nation