There are probably many ways, but here are two I've tried:
1. Direct application for cuts, burns, etceteras...just cut a piece of a leaf, rub the juice directly on the affected area. Keep the rest of the leaf and it's gel in the fridge in a zip lock bag for next time.
2. Drink. UGH! Taste can be terrible. But, peel the leaf, put the get into a blender, with something that tastes good, make a liquid out of it, and drink. Don't do too much at a time...the longer it sits, the worse it tastes!
Since you're in Oklahoma...In Lawton (I still have a home there) a company called Cosmetic Specialty Labs made Aloe Vera products for us in the mid-80's for a pilot company. They had access to aloe and put it in a lot of different products. Don't know if they're still in business, but you might check.