An Apple ID helps unify your personal use across multiple Apple devices, such as iPhones, iPads, and MacBooks. If you have forgotten the password to your Apple ID and need to reset it, head to iforgot.apple.com and enter your ID name. The website will ask you some questions to verify ownership, but soon afterward you will be given the opportunity to change your password.
Patty has new iPad and she hasn't been able to unlock it. There is a process that Apple uses called "IForgot" that will help you to recover and reactivate your iPad. Here's a tech note on how - https://support.apple.com/en-us/HT204306. This page will walk you through. If that doesn't work, then your next move is to go to a nearby Apple store or call Apple support. You'll also need to know your AppleID.