Access Control Center on your iPad - Apple Support
How long does Apple support iPads?
Add or remove your phone number in Messages or FaceTime - Apple Support
Check your Apple ID device list to find where you're signed in - Apple Support
How to back up with iCloud - Apple Support
Set up Family Sharing on iPad - Apple Support
How to erase all content and settings – Apple Support (UK)
Create and format notes on iPad - Apple Support
Connect to Wi-Fi - Apple Support
How to update your iPad Apple Support
Use security keys to sign in to your Apple ID account on iPad - Apple Support
iPad Basics: Security and General Settings
Get started with Freeform on iPad - Apple Support