Hi, and welcome.
You can get started on your questions and a lot more by reading here:
http://forum.lugerforum.com/showthread.php?t=13121
A lot of effort went into these frequently asked questions and they will give you a lot of background info.
Don't do anything to clean or restore until you really understand the ins and outs of luger collecting.
And please upload your pictures to the server here, those links to outside hosts will eventually disappear.