I went to Barnes and Noble tonight looking for a book about machining. I didn't find one about that in particular but I did find an excellent and fascinating book.
Mechanisms and Mechanical Devices Sourcebook
Just in case you need to move something. This book details hundreds of mechanical motion linkages, how to model and use them. It's a good reference source for inventive persons like me.
Also, while looking for tips/instructions for a drill press I came across the eFunda (Engineering Fundamentals) site. This contains a trove of information about engineering and designing devices. Really amazing the amount of free information available via the internet.
I will soon be doing a CNC links post.
I am looking seriously into building a Home Built CNC milling machine (in other words it could be 6months to a year or more till I build one :P).
That's all for now, come back in a coupla days when I unveil my latest project.