A:Answerhttps://support.apple.com/en-us/HT204306
Follow the link above, and you should be back in business, then set a passcode you will remember and the fingerprint ID.
A:AnswerThe iPad does have a files folder where your documents will be stored and you can always download scanner app from the AppStore and print via air print as far as you have a printer that has that feature.
A:AnswerIt works off of your home wi-fi. It also works of of other WiFi that have guest. I have not had to pay for anything. Works just about anywhere.
A:AnswerThis iPad can play HD videos, but not anything above 1080p (i.e. 2k and 4k). Transferring photos can be done in a variety of ways but the easiest method for me was and iCloud backup. Otherwise, I recommend creating an iTunes backup on your computer.