Weaselkeeper,

Good on ya! Hunting is a great way to suppliment your families food source. Latch on to a experienced hunter (your grandfather would be great) to learn the basics and after that every time your in the woods you will learn somehting new.

A bit of a warning though, gearing up for your first year of hunting "could" (and I emphasis the word "could") become a expensive proposition if you let it. I speak for myself here, I hunt because I enjoy it and getting the meat if I'm successful it a nice benefit but in no way do I do it solely as a food source. Taking the class, buying a license, buying a (choose 1 or many) rilfe/shotgun/bow/crossbow, buying ammunition/arrows, buying the appropiate kind of clothing, and finding a place to hunt, whether it be public land or you joining a hunting club. All these things can be an expensive initial outlay from your purse or wallet. Oh yeah... dont forget gas (I drive 102 miles each way to get to my lease) And then the maintenance costs associated with upkeeping these items as well. Hunt club memberships can range anywhere between 600 to 1200 dollars a year, plus work days on the property required. So, as Virginiashadow said, you could put 75 to 125 pounds of meat in your freezer to help feed your family. (oh yeah... you do have a full size freezer, don't you?) So, break it down the middle and say you get 100 pound of meat and your paying 700 dollars for a hunt club membership (by the way, many hunt clubs share the meat between all the members present at the hunt, so even if you arent successful that day, you still walk away with something for the freezer). That makes the cost at $7 a pound. And that doesnt include everything I mentioned above.
Weaselkeeper, I'm definately not trying to discourage you, just the opposite, I'm encouraging you and welcoming you into the family. Its every outdoors persons responsibility to educate newcomers and ensure they have as many facts as possible.
I've gotten 2 deer this year so far (1 with my crossbow and 1 with my shotgun) but I have 4 deer worth of meat in my freezer. Its been a good year so far.

If you have any questions... feel free to ask not only me but any of the members here. And if you need hunt club info, you can also ask about that. My club is just a bit south of you in Emporia.