I'VE MADE AN UPDATED VERSION OF THIS VIDEO! PLEASE WATCH THAT INSTEAD: https://www.youtube.com/watch?v=2vNPFRbwzcg&t
This video explains how to reset your Apple ID password if you forget it. You'll only need a device with a web browser and an internet connection. You can use a iphone, ipad, computer etc.
Links mentioned in the video:
iforgot.apple.com
( https://iforgot.apple.com/password/verify/appleid )
The device in the video: iPhone 5s with iOS 11.2.5
Link to Apple's guide to do this:https://support.apple.com/en-us/HT201487
Contact Apple Support: https://support.apple.com/en-us/HT201232
Regards,
Simon