Setting up a group

If you have alot of friends who are interested in Dungeons and Dragons, then gather them around a table and play. However, some friends are probably less willing to try out Dungeons and Dragons because it has a negative stigma attached of it being too "geeky". But these people generally don't really know alot about Dungeons and Dragons. Just introduce your friends to this website and see how they fare. Maybe let them borrow a PC game or two and see if they like it, or maybe some fantasy books to introduce them to the fantasy genre. You'll probably find that quite a few of them will enjoy it and would like to know more. Especially the whole idea of increasing in power gradually and taking part in a fantasy story. You only want maximum of 4 players and yourself.
However, if you're really stuck the best source is on the internet to find a Dungeons and Dragons group.