Have you watched the videos above?
I'm currently reading Machine Shop Operations and Setups. There are a couple on ebay right now under $20.
Looks pretty good - found an image of the TOC. Abe has it for like six bucks - almost can't afford not to give it a go.
The Moltrecht volumes are probably the first books I bought on machining. They're good, but I didn't get as much out of them as I did the others that I mentioned. Perhaps they have a higher requirement for background knowledge (like having read the shop class textbook) - I certainly find them more useful now than I did when I first read them.