That's called a Hackerspace! You can find your nearest one @ http://hackerspaces.org

I would suggest becoming a mentor. Hacker scouts has mentor training sessions where you learn all the skills so you can help teach them. I've been mentoring Hacker Scouts for a while now, and I've been taught how to weld, cnc mill circuit boards, and a lot of sewing techniques.

At the LA Makerspace, the Hacker Scouts program (Los Hackers) has a focus on kids but is open to all ages.