Tips on starting a worm farm?

I want to start a worm farm this summer.
How do I build a farm using a medium sized plastic container?
What do I feed the worms?
What kind of worms do I get? Are earthworms good? I heard red wrigglers are. If you suggest, them-then where do I buy them or find them cheap?
If I put them in my room…do they smell bad? Or should I keep them in our garage?

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