I have a theory, and it is only a theory, that is your worm farm container ought to be made from wood.
I’ve seen metal containers that resemble large jugs of water that are metal. I have also seen the plastic containers which look like storage bins you use in your garage. I have used all them, and the best compost and the fastest reproduction of worms always seems to happen with a wood bin.
If you are only doing this as a sideline and for therapy or just for a simple hobby, then a plastic container will do the trick.
Making this all work, with wood, plastic or metal is really up to the maintenance of your farm. Wood does work the best as it is more earthy, and more natural to the worms.
You want to ensure the worm farm is really moist. I like to keep it more wet than dry, but not wet enough to drown the worms. Worms cannot swim too well. But if you have the dirt a bit more moist than usual, that is good, and it will take more time to dry out.
On the other hand, dry dirt will dry up the worms, and they will die quickly. They also live under the dirt, in a cool, moist, dark environment, which they love, so keeping the dirt moist all the time is best.
Once you have the farm ready and the dirt ready to go, you would add your worms, and they will eventually go under the dirt. They actually move under the dirt pretty fast if its moist enough. You can always tell if the dirt is moist enough for them by the way the react when you place them into your farm.
Now, setting up the boxes are simple. I like to take two boxes (if doing vermicompost), placing them one on top of the other, with the top one having holes in the bottom. Now I place the food scraps on top of that dirt, and let them do their thing.
Once the worm farm grows, I add a third container to the top, add dirt mixed with egg shells (really fine egg shells) and us that box on top for the food. I also move the food around when placing it into the top box, to fool the worms into thinking its a new area with new food, it works great and I never have a worm hunger strike.
So now you have the urninal (bottom box) the bedding and living area (the middle box), and the food area (the top box) and a healthy and happy worm farm, providing you with vermicompost so you can grow your own food, in a very healthy fashion.
My biggest tip is always to check the worms and see if they are moving around, or not, and ensure the dirt is moist and the food is moved to a different section when it’s feeding time.