Step 1: Ingredients
Pick something cheap, but still drinkable. If you wouldn't drink it, don't use it.
You need about 1 pound. Less will work, but it will make the final product have a more subtle taste.
I personally use mason jars, but you can use old liquor bottles, jars, cans, or whatever. You should probably use glass, as the plastic will impart a bad taste to the vodka.