With a power drill (or hammer and nails) drill drainage holes at the bottom of the two nesting bins. Also use the drill to make air holes on the sides of the bins around the perimeter where the bins overlap.
Fill one of the tall bins a third full with a mix of the dry bedding. Wet it down so it feels like a wrung-out spunge.
Add the worms to the bin in the corner. Then top with 4 cups of kitchen scraps that are roughly chopped.
Add a layer of dry bedding, leaving dry this time.
Add four wooden risers in the shallow bin. This will allow room for the leachate to drain. Then, set down the middle bin on top of the risers. Next, add four more risers to the bin. Finally, place your worm bin on top and add the lid.