Setting up your iPad: https://support.apple.com/en-us/HT202033
Updating your iPad to the latest Operating System: https://support.apple.com/en-au/HT204204
Backing up and restoring your iPad: https://support.apple.com/en-au/HT203977
Creating an Apple ID without a payment method: https://support.apple.com/en-au/HT204034
Redeeming App Store & iTunes Gift Cards: https://support.apple.com/en-au/HT201209
Downloading apps and games using the App Store: https://support.apple.com/en-au/HT204266
Using parental controls on your child's iPad: https://support.apple.com/en-au/HT201304
Setting up Find My iPhone on all devices: https://support.apple.com/en-au/HT205362
Setting up and using Family Sharing: https://support.apple.com/en-au/HT201060
Connecting to WiFi: https://support.apple.com/en-au/HT202639