If you are looking to improve your proficiency with Apple products in your teaching, go to appleteacher.apple.com and sign in using your Apple ID.
There are various resources available from other teachers that are using apple products in effective ways in their classrooms, and all of the official Apple guides are easily accessible for your personal study.
There are three paths available right now:
When you complete a path, you get one of the signatures/logos (shown at the top of the image at right) that you can attach to your creations to show your proficiency and availability as a resource.
If you are new to the iPad operating system, there is much you can learn about your device from the official Apple help guides.
Another really great and simple introduction to the iPad can be found at Goodwill Community Foundation here.