Shuck your corn and wash off all the little stringy corn silks as best you can. Some folks are real particular about getting the strings off (me) and some don't really care much about getting every little string (my kids). Then boil up some water and blanch the corn on the cob by dropping it in the boiling water for 6-8 minutes. Mine didn't want to stay down so I put a bowl on top of it to keep it in the water. (this new blogger typing thing is going to take some getting used to)
Pull the corn out of the boiling water (I use tongs) and put it into some cold water.
Scoop the cut corn into freezer bags or vacuum seal bags in a quantity that looks like one meal's worth for your family. A little less for a couple, a bunch for a big family. Or you can measure and do each bag at about 2 cups and have around a pound of corn per pack. Whatever works for you. Seal your bag, sharpie your date on it and put it in the freezer. Easy.
Put your cut corn on your dehydrator trays and dry until it's hard and crispy. Remove and store in a jar, vacuum pack bag, bucket, whatever you like to use to store your dehydrated goods. Mark the date on it.
This dry corn is for rehydrating in soups and whatnot, not for grinding into cornmeal. If you want to dry corn for cornmeal, just let it dry on the cob without doing any blanching like this.
There you have it. Choose Your Own Adventure #379: Corn ;)