Rinse your dried beans and place them in the crockpot (you do not have to presoak your beans).
Top with the salt and water.
Cook on low for 8-10 hours.
Separate into freezer friendly containers or freezer bags.
Allow to cool completely before placing in the freezer.
How to reheat:
Take straight from freezer and place directly in crockpot if you are using them in a crockpot recipe (like a soup). You can cook them on low (directly from freezer) in a medium size pot until thawed and heated through.
You can also thaw them in the fridge the night before you plan to use them.