2. You need to know what flavor to use with your cinnamon.
Typically vanilla is used as a background flavor to cinnamon. I think Brown Sugar Flavor is better, much better. And it's a lot less expensive than vanilla. And it's on sale right now.
Cinnamon is a complementary background flavor. It makes an apple pie taste better. But you can switch to cinnamon chips and cinnamon becomes the primary flavor with a burst of flavor in every bite. It's like adding chocolate chips to your baking.