All you do is wash your apples. Now take your apples and slice them. I use a mandolin and use my "medium" slice. Take some lemon juice and pour some into a bowl. As you slice your apples, take them and dip them into the bowl (just long enough to get some of the juice on all surface layers).
|The apple slice in the bowl of lemon juice.
Turn the dehydrator on and let them dehydrate about 8-10 hours. I just turn on my dehydrator when I go to bed and they are done the next morning. I store mine in mason jars.