@iamwhoiam... and well to any other new Michigan cosplayers and general anime, manga and gaming fans....
Well I know a lot of the local Michigan community (cosplay and otherwise) is hella more active on Facebook nowadays. And surprisingly our community ranges from members between 14-18 as well as has a pretty active 18+ community as well, with some of the oldest members of some of the groups being anywhere between 30-60....so you could say the MI community has a lot within the 14-60 age range (with the average falling between 15-30). And many of our 'older' community members do actually try and be positive mentors to the younger members...
Meanwhile the main big events of the year are Shuto-con, and Youmacon, then we have Midwest Media Expo (the newest event of the lot), Go! Daikocon and several smaller con (or con like) events like JAFAX, Alma-con, Con Ja Nai, Anime Park, SS Kaizoku Con and the somewhat on hiatus NMACon (due to location issues).
So definitely come check out the following groups:
The Main Groups---
There the "Michigan Cosplayers": https://www.facebook.com/groups/michigancosplayers/
The Real Cosplayers of Detroit (Great if your in the SE MI area and are looking for more 18+ crowd): https://www.facebook.com/groups/299838090069365/
SEMICos (SouthEast MIchigan COSplayers: https://www.facebook.com/pages/SEMICos/420696721342656
Great Lakes Cosplayers (Mostly MI, but may also be home some from OH, IN, WI and any close to the Great Lakes): https://www.facebook.com/groups/413553242016925/
Buying. Selling, Trading and the like---
For Buy/Sell/Trade among MI otaku (Cosplay Related):
Cosplay Buy/Trade/Sell MI: https://www.facebook.com/groups/572545579519084/
Plus Size Anime Cosplay Swap and Sale (Does include Non-MI folks, but awesome if you or other you know looking for quality cosplay for plus size members): https://www.facebook.com/groups/458791927501935/
Specialty stuff...groups specific to fandoms off hand---
If your a Whovian...
Michigan Whovian Doctor Who Cosplay: https://www.facebook.com/groups/1538445516390357/
If you be a Homestuck...
"Main Group" Michiganstuck: https://www.facebook.com/groups/michiganstuck/
Michigan Homestuck Meetups (Kinda the page for tossing meetup/event info for all the MI HS community): https://www.facebook.com/groups/418751178162615/
Mid-Michigan Homestucks (The branch that tends to focus on meetups midstate like around Lansing and that area): https://www.facebook.com/groups/110541092442549/
Capital Steam (The MI Steampunck Community): https://www.facebook.com/groups/Capitalsteam/
--They actually got a few things coming up, like Steampunk Febutastic, featuring Van Helsteam in February and the Gears, Beards and Beers II in March...
If you happen to collect BJD's...
MI BJD's: https://www.facebook.com/groups/252581661444725/
ANd if you happen to be a writer or participate in Nanowrimo...
Generic MI Branch Search: http://nanowrimo.org/regions?filter_regions=michigan
Local Chapters of MI Nerdy Activist Groups---
Harry Potter Alliance (Official Site): http://thehpalliance.org/
Link to ALL MI Chapters: http://thehpalliance.org/chapters/find-a-chapter/#mi
HP-MI (A Detroit Community Chapter of the HPA) [New Page]: https://www.facebook.com/groups/hpamichigan/