I just ordered the book "Robot Builder's Bonanza," from Amazon. I'd noticed other R2 builders have bought it, and although I'm not sure if it will actually help me when I get to the electronics side of things with Bili, for $6.60, including shipping, for a book that lists at $24.95, it should at least be an interesting, informative, and inexpensive read.
I also went to The Big Tool Store, right down the street from my house, because they are one of two stores in Kansas that carry the Rockler Lazy Suzan Bearing that I'll need for the dome. They have it for $60. It'll have to wait a little while, but at least I know I can get it without paying all the shipping costs.
Total spent on Bili so far, $6.60