Chuck -
When I started Luger collecting I found an electronic book on Luger mechanicals. The title is "Luger Mechanical Features." It is published by HL-EBOOKS. The author is G. Henrotin. This is a downloadable book which is stored on your computer.
Their web site is:
http://users.skynet.be/HL-Editions/index.html
They publish books on numerous guns, and I have purchased all of the Luger books. They are excellent for a beginner, and the disassembly in "Luger Mechanicals" is clear and easy to understand. The mechanicals book is loaded with cutaway diagrams in color. The diagrams go beyond simple field stripping and provide details on removal of all of the more difficult parts.
The books only cost about $7.50 when I bought mine. No, I do not have any connection with the seller.
Good luck.
Luke