I stumbled onto this site that has very basic machine tool study guides in .pdf format (metal lathe, milling machine, grinder, etc.).
Interesting for people with little or no experience with machine tools.
http://www.aps.anl.gov/APS_Engineering_Support_Division/User_ESH/Machine_Shops_Public/
Interesting for people with little or no experience with machine tools.
http://www.aps.anl.gov/APS_Engineering_Support_Division/User_ESH/Machine_Shops_Public/