If you're just entering the City as a resident or long-term visitor, these are a couple things you can do to get acquainted.

• Go to the Detroit Public Library and get a card
• Hang out in the Detroit Institute of Arts
• Visit La Gloria
• Visit city bird and get some postcards
• Make contact with the local Detroitcouchsurfing group, Couchsurfers are more open and trusting that normal, and make new people welcome,
• Volunteer to help with TEDxDetroit  TEDx-ers are open minded and love sharing ideas. 
• Volunteer for things that you love doing. There are loads of organisations that would love to have you involved