You can opt to peel your chips, it makes for a tastier chip, but less healthy. You can use as many apples as you want.
Cut the apple pieces very thin, the thinner the better honestly. The thinner they are the more crunchy and chip like they will get. The thicker the apple the more the apple will taste like a chewy tire.
Depending on how many apples you are making, lay your apples on your dehydrator tray, one at a time. Each time, you will lightly dust them with cinnamon sugar. Not too much.
Once all of your apples are prepped and dusted, put your dehydrator cover on them and set at the fruit temp. Cook for 5 to 6 hours, your house will smell like apples. You're welcome.
Try not to pull them out too soon, they wont be as crunchy.
Enjoy!