Miller student package deal. About a package deal that Miller has on their web site. I will go over the separate books and booklets purchase 
http://www.millerwelds.com/education/tools/PDF's downloads 
http://www.millerwelds.com/education/bookspamphlets.htmlHandbook for Resistance Spot Welding
by Miller ©2007
soft cover booklet
 
       * Safety Precautions
    * Introduction
    * Fundamentals of Resistance Spot Welding
    * Maintenance and Troubleshooting
If you have one of those hand held pincer style knocks offs or a real miller one this will answer some of the questions you have when you start out using it from why am I tripping the breaker each time to dressing the electrode points. If not it will answer the question can I use one, screen spot welding to frames and other sheet metal jobs.
Arc Stud Welding Fundamentals
By Miller
copyright© 2005
soft cover booklet
 
       * Safety Precautions
    * Arc Stud Welding SW) Guidelines
    * Stud welding Process
    * Weld Inspection/Trouble Shooting
They have given all the information on studs welding to steel tanks or plates. and charts and drawing in both booklets. I have an off brand that was given to me of a type of stud welder that is used for attaching the boiler lagging rivet/studs to the boiler and it pretty much follows the same information path as Millers.