No need to be clueless, there's enough of that around already. Go to the section entitled
Events - TT Meetups. That's usually an obvious place to start. Go along to an event that tickles your fancy or post your own and invite people to show up somewhere (state a time and a place to make life easier).
But, there's
curry night, German Stammtisch, Tuesday drinks, SA Stammtisch and that's just the regular ones. There's a million other things that you can go to and meet English speaking people.
Or just go to one of the many Expat-stylee pubs in town and talk to people. Kilian'S,
The Arc,
Twisted Bavarian,
Günther Murphys, Shamrock, etc, etc, ad nauseum.
Wilkommen und Viele Glück