Password problem Galaxy Tab 3 10.1

I purchased a Galaxy Tab3 today and am unable to complete set-up as I made a mistake in entering my passdword. I am not even sure if I was supposed to create a new password or if it had to be the same as on my Free box. Can anyone help? I am blocked and most frustrated!! I have consulted the user manual, but cannot even access settings to return to factory default settings!

 

Thanks for your response. No, I hadn't even managed to enter a GMail account. Pardon my ignorance, but would you be kind enough as to tell me how to reboot this little beauty so as to access factory settings??? Many thanks in advance.

 

I actually managed to reset to factory data settings, reboot and start again, entering the password connected to my Freebox, but am still getting 'authentication error' message each time, so still cannot proceed any further!