Where can I learn carpentry/woodworking for a hobby, not a career?

I’m already a grad student, so I don’t want to do this for a career, but I’ve always been fascinated with carpentry. Seeing as I live in an apartment (no garage to buy tools/practice) and have no previous experience (other than some shop class in high school), how can I get my hobby going? Are there classes for people like me? I don’t care about legal/technical stuff, I want to learn the art … how do I do that?

PS: I’m in the DC area if it helps any

Thanks for any help

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