Build your worm bed out of wool or plastic storage bins. Start your worm bed in an old cardboard shoe box first.
Shred old newspapers, avoiding pages with full-color pictures. Mix together 1/3 shredded newspaper, 1/3 peat moss and 1/3 ordinary garden soil. Place the mixture in your worm bed and dampen slightly. The mix should remain loose when dampened and should not compact.
Test the mix for the proper pH levels with a soil tester. Worms like a pH of 7. Add lime to the mix if the pH level is too low and add ammonium sulfate if the level is too high. Retest the pH level of the soil and continue to adjust accordingly. Change the dirt every two months.