Hi, NaturalGirl02...
I see you live in Indiana, so that would rule out growing your own lemons outdoors. There is a variety of dwarf lemon tree for indoor culture (although they usually recommend you put them outside during the warmer months- just be sure they get enough water because plants outdoors in containers dry out much faster). But I don't know how easy it is to grow. And you almost certainly wouldn't be able to grow all or most of your annual supply.
Anyhow... I usually just buy citrus fruit from my local grocery store because I don't eat the peels (but I do put them on my compost pile). My local health food store sells organic produce, but I haven't much looked into it.