i know it seems basic, but here are a few steps to build this...
the container is clear, paint black to keep light from roots (outside)
you can use from 1/2 to 1" tubing to support the cuttings.
drill holes to size and place the tubing in holes 1" long.
drill 2 more holes for the air tubing above water level.
fill with room temp water (80f) 1/2" below cuttings.
plug in air pump and check that all your cuttings are wet from the air bubbles bursting above the water line (i found it is o.k. to start with the cuttings touching the water also), to lazy to make all the cuts the same size.
the water will evaporate very slowly so i just change once a week to keep fresh from algae. also i add a very little bloom nute (P) to help with rooting.
very simple just misting twice a day for the first 3 days.........GOOD LUCK !!