If you are having trouble reading the blueprints, you may not have a clear set. Some folks have copied the blueprints sold on this site and reduced the resolution so the small numbers are hard or impossible to read. These blueprints are known for readability. If you don't understand what you are seeing, that is a different issue. Then you will require a bit more study of mechanical engineering and manufacturing drawings.
If you have specific questions about specific parts, ask them. But your original request is too general in nature and doesn't use the correct terminology for folks to assist you.
Study the thousands of photos available on this site already... that may help you.
If you are truly interested in knowing all about the mechanical issues with Luger pistols, then buy the e-book by Gerard Henrotin. His animation is on the home page of this website and there is a link to where you can buy his e-books. The one on the Luger Mechanicals is excellent for beginners and includes animations to show not only the parts but the working relationships between the parts. The e-books cost less than $10.00 each.
Here is a link to the one recommended.
http://www.hlebooks.com/ebook/eluger1.htm