iPhone Videos

• Original iPhone Introduction - This is when Steve Jobs announced the original iPhone. I feel like this is still worth a watch because the basic functions displayed here are still at the heart of the device.
• Apple Support iPhone Videos - Basically everything you can do is shown here.

Specific Device and Operating Systems Videos

• iOS 14 Presentation: WWDC 2020
• iPad OS 14 Presentation: WWDC 2020
• WatchOS 7 Presentation: WWDC 2020
• iPhone SE (Second Generation) Review - Rene Ritchie

Documentation (from Apple Books)

• iPhone User Guide: iOS 14
• iPad User Guide: iPad OS 14
• Apple Watch User Guide: WatchOS 7