This is an odd request. Did you buy it or are you borrowing it? Do you know the former owner? That person could have wiped the device before selling it.
None of my business I suppose.
There are ways to get data off the touchpad and in most cases, in formats that you can give to the former owner so he or she can put the information on another device.
It used to be that personal data was backed up to the HP servers and could be restored the the Touchpad by logging into that profile, but the servers were switched off 18 months ago. There is no longer any official support, but you can manage it yourself with a bit of effort and this forum. These days we rely on some apps to do it. It is a bit complicated, but you don't need to be a programmer and you can do one set of items at a time. It may be useful to have a computer to extract the data to. You will need to install java on it and drivers for the connection. But data files could probably be emailed straight from the tablet. Those files can also be restored to the tablet at a later date. You can see a link to backup tips below.
With contacts, calendar entries and the like backed up you could just delete the entries on the tablet and go ahead and use it. If you want to start from scratch, you could reset the tablet or you could use a webOS doctor. This is a java program that runs on a computer (see above) and reinstalls the operating system. If you do this, then the tablet will attempt to contact the HP servers... and fail! You then need to run another program to bypass this step and use the tablet. You will also lose all third party apps and there is no more official app store. Apps can also be backed up, but the are also sources of many apps on this forum via the unofficial 'app store' called Preware.
Details on setting up a webOS device today are here:
It is worth getting a copy of the webOS doctor for your tablet as it is the last resort if the system develops errors. They can still be accessed from HP, but you need to alter a file to get to the servers. https://pivotce.com/2015/06/15/tip-e...-palm-servers/ You can use this list of links: http://www.webos-internals.org/wiki/...octor_Versions (unfortunately that site needs maintenance, so use: https://web.archive.org/web/20160331...octor_Versions )
All the links below may be of interest. If you are ambitious, you can try to install other systems such as Android or the new version of webOS, LuneOS
...and after writing all that I see from your other posts that you have a Pixi, so probably some idea about this stuff already!