Welcome to the Lugerforum David (Lawdog67),
Anything the forum can do do help, outside of money

just let us know.
My first suggestion is to read as much of the forum as you can to get a feel for what is out there... especially the New Member forum.
Then get yourself some good Luger reference books to decide just what you want your first one to be... just a shooter in good condition? There are plenty... collectibles can range from the price of shooters if you are lucky, to multi-thousands for the really nice ones...
Don't be intimidated. This is a friendly crowd.
Do you happen to have the serial numbers of the guns your Dad sold? I don't want to get your hopes up but just because he sold them doesn't mean that they might not resurface... If you have the capture papers, they might be your first lead.
Once again welcome.