may i suggest you find a friend who knows how to use a gun. if they are anything like me, they can't wait to share their knowledge of guns with their friends. a lot of ranges offer classes if you don't have any friends with gun knowledge. while not the best class for a beginner, the concealed carry class will give you the basics of operation, safety, and handling. i'm sure the instructor would be happy to help you out.
that being said, buy
this or
this