First and most important, congratulations on your determination to finish HS, join the workforce and learn the essentials of living in a community. You are very brave and should be commended.
I don't know about Pittsburgh, I assume it would have similar government funded programs. We have Boulder County Mental Health Office. They have a ton of resources. Your Doc might be able to point you in the correct direction if you tell him what you would like to learn. The local college, and the school district have a number of non-credit classes on just about everything. You might also find information on the Internet.
Good luck and let us know how it is going.