Hi Vic..!!
The best place to go from here is to buy books. I can recommend quite a few. For what you are describing - I would suggest Mr. Still 3 Volumes (Imperial Lugers, Weimar Era and Third Reich Lugers). They are very very good, and heavily illustrated. As well - Lugers at Random (Charles Kenyon), The Luger Pistol (Datig)...
Hmm - I can keep going..?? How much money of yours can I spend??!! <img border="0" title="" alt="[Wink]" src="wink.gif" />
Seriously - books are an excellent source of information, and I think you'll refer to them often - I know I do.....
Best to you!