Like Lakedawgs said, there are a lot of events scheduled in the Indianapolis area. Each month, we hold GIG (Girls in Geocaching) dinners. These are not restricted to girls attending, we welcome all. The October dinner is the next GIG dinner (hosted by yours truly). It's on 10/25 at the Carrabas off of Southport Rd. at 465. on 10/10, there are three different events going on in the Indy area. Two flash mob events and a lunch (hosted by Lakedawgs).
All of these, and more, can be found on the event calendar which is accessed from the home screen at Geocaching.com. (Down near the bottom - click on the link that says "View the Event Calendar".)
It's not unusual for cachers to band together to seek out some caches after an event. It will also give you opportunity to meet up with some experienced cachers to see how they do it.
Edited to fix a stupid typo.
Great, thanks a lot for the info about the calendar. Never knew it existed At risk of sounding green, what the heck is "flash mob?"