Step 1: You will need...
-- A drill
-- A large drill bit. I used a 21/64 because that's what I found in the basement.
-- 4 small plastic containers to use as risers. I used small yogurt cups (not shown)
-- Some newspaper, shredded
-- A handful of dirt. For indoor composters, bug free potting soil.
-- Red worms
Step 2: Prepare the bins...
For the rest of the bins: drill as many holes in the bottom of your bins without compromising structural integrity. The holes should be big enough to allow an adult worm to pass through. You may need to get more bins as time goes by. I started with 3 bins and will be upgrading to 6 soon.
Step 3: Using the bins
Step 4: Setting up the condo
Place your first full bin on the risers and add your worms. If you put a lid on it, your worms are less likely to escape. As you fill bins, add them to the stack. Need compost or run out of bins? Take a look in the bottom bin. It should be compost and ready to reuse. If you're just setting up and the bottom bin is still scraps, you'll need to acquire and perforate more bins. An established worm colony can eat through my garbage in under a month. I've heard it can take about 3 months to establish a colony.