Apple Resources - Manuals, Specs, and Downloads

Apple Manuals   

My Apple Devices (includes Manuals)   

iPad User Guide
iPhone User Guide

Mac User Guide   

Upper Left > Help (changes with each app)

Apps included on your Mac

Apple Platform Security (May 2022)   

  Secure software requires a foundation of security built into
  hardware. That's why Apple devices-running iOS, iPadOS,
  macOS, tvOS, or watchOS-have security capabilities designed
  into silicon.