i'm totally ignorant and my unrooted tablet is stuck in a boot loop
I have been through the same situation
 After the factory reset, I faced a similar situation. You can take out the SIMs and memory card and do a factory reset. After the factory reset, latest Android update pre-installed with Google Siri which has speech recognition and face recognition technology and I can assure you, once you get used to it, it can do wonders.
Regards,
Mithun