You can get a lot of buckets, go to the nearest farm and get manure usually for free. Or keep a pet bunny. If you hate the idea of being near manure, never mind, you do not need to use it. A compost pile will work fine, especially if you use worms. See next question.
Worms are great.
They will crawl into your pile anyway, but you can speed things up by adding more. Charles Darwin discovered that worms help make soil, by digesting garbage and outputting, so to speak, enriched soil. Coffee grounds are great in compost. Starbucks Coffee stores will give you great big bag fulls for free. Stir them in, though, or they might clump together.