How do I reset my iPad if I forgot my password and don’t have another device to login from

Read this Apple Support document about what to do "If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled". Click here --> http://support.apple.com/HT204306

You will have to erase the device and set it up again. You can restore from a computer or an iCloud backup.

Restore your iPhone, iPad, or iPod touch from a backup - https://support.apple.com/HT204184

Do you really mean password, or do you mean passcode? What are you trying to do and what message are you seeing? There are very divergent solutions depending upon what you are seeing.