How Do I Clean Everything Off My iPad
How Can I Clean Off Everything Off My iPad?
iPad 2 Wi-Fi, iOS 8.1.2
How Can I Clean Off Everything Off My iPad?
iPad 2 Wi-Fi, iOS 8.1.2
If you want to remove all of your content from the iPad and put it back to factory defaults you could follow these instructions i.e. as though you were selling it : What to do before you sell or give away your iPhone, iPad, or iPod touch - Apple Support
If you want to remove all of your content from the iPad and put it back to factory defaults you could follow these instructions i.e. as though you were selling it : What to do before you sell or give away your iPhone, iPad, or iPod touch - Apple Support
There are 'settings' you can use to erase, within the iOS device.
..And depending on future fate of the iPad, you could do more..
How to erase your iPhone, iPad, or iPod touch - Apple Support
Learn how to wipe information from your iPhone, iPad, or iPod touch
and restore your device to factory settings.
https://support.apple.com/en-us/HT201274
What to do before you sell or give away your iPhone, iPad, or ...
If you still have your iPhone, iPad, or iPod touch. Before you sell or give away
your device, you should remove your personal information. You shouldn't ...
https://support.apple.com/en-us/HT201351
Not sure how far you need to go, or if you may restore it later for use.
{..edited to add : I need to erase my ipad and reset to factory settings in order to sell it but it won't do it..}
How Do I Clean Everything Off My iPad