First, JB, subscribe immediately to PGI. If you'd been faithfully reading your PGI every onth all your questions would have been answered long ago and you'd know what was what.
And joining a local team is an excellent beginning.
Or failing that... make sure u have all the gear u need and turn up nice and early to a tourney venue (when there is a toruney on ). Normally there are a few lower ranking teams who are short of a player or two due to illness or whatever. As long u u have the dough to pay your way and you dont act like a total newbie retard then you might get a few games