I've received several Free Manufacturer's Coupons in the mail. Most recently I received a coupon for a free bag of Ore-Ida sweet potato fries. My questions is, if I save this coupon and eventually a store has a B1G1 sale on this item does that mean I get 2 of them for completely free or only the one? How does a B1G1 sale work in conjunction with a completely free coupon?

If the store has a B1G1 and you save coupon 'til then, you'll get two free. The coupon is what you are "buying" the first one with, and the second is a bonus from the store. Hope this makes sense.

I agree. I would be prepared to get questioned though because a lot of places seem to have trouble with these types of scenarios.

Save it an use it for a bogo sale IF your store does the bogo sales as full price for one and zero for the other.

If they do a bogo as 1/2 price and 1/2 price, it's better to just use it on one free package unless you don't mind paying 1/2 price for one of them still.