Red wigglers are the typical species used in vermicomposting and can be purchased online by the pound. To get started, you will need bedding, food scraps, and a bin for the worms to live in. The size of the bin depends on the amount of food scraps your household generates. A plastic box that is 2 to 3 feet wide and 12 inches deep is good for most families. Drill several small holes in the bottom of the bin, and place a second box underneath to capture any liquid that seeps out.
Add 6 inches of damp shredded newspaper bedding, a handful of garden soil, and a pound of worms to the bin. After one week, add a 1-inch layer of food scraps and cover with another 1-inch layer of dampened shredded newspaper. Store the bin out of direct sunlight and where it will not freeze.
Avoid feeding your worms meat, greasy or oily foods, onions, garlic, bones, and acidic foods such as citrus peels. Before adding waste to your bin, chop food scraps into smaller pieces to make them easily digestible. Bury scraps in the bedding to prevent odor. Learn more here: http://www.bae.ncsu.edu/topic/vermicomposting/