When you open iTunes you can click on Help on the top toolbar.
You will get a drop down menu that says iTunes Help and another one that says iTunes Tutorial.
The iTunes Help will give you step by step how-to directions in a written format.
The iTunes Tutorials will give you video step by step how to directions.
The same steps can be used for help in iPhoto, iMovie, FaceTime, or Garage Band.
When you first open up the Help menu you will have to click the button to download the Help document.
Once you download it you can use the help even if you are not on the WiFi network.

Finch Summer Campus Academy Training
iMini Sessions 15 minute overview
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This is from a Region 10 iPad training