Hello Hello!
so? this is the best site to come to!... as a GM or Player you have all the tools on the main page.
You want to run again, you can advertise your game on 'Players wanted ' thread... you want to play? you search the same thread. GMs can bump thier games one a week ( there is a timer in your box , on the ad)
don't be afraid to ask question? but if you played on other sites, you will find this site cleaner and more intuitive