Does the panasonic KX-T7730 have a phone book

It depends what telephone system the KX-T7730 is connected to. You should have a Panasonic box that says 'KX-TA624', 'KX-TEA308, 'KX-TES824' or similar somewhere.
Depending which Telephone System you have, it may just need programming or it may need an additional card (circuit board) installing. Panasonic KX TEA TES Telephone Systems Tiny Telecom

http://service.us.panasonic.com/OPERMANPDF/KXT7720.PDF

or

http://www.ehow.co.uk/how_7159736_program-panasonic-kx-t7730.html

Here is the User Manual for the Panasonic KX-T7730:

KX-T7730 Manual

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

Hello and Welcome to FixYa! Here is the link to the Online Free Manual Guide Book for Panasonic KX-T7 Corded Phone.
Hope it works for you.

I need the User Manual for Panasonic Model KX-TSC11MXB Made in Malaysia in english - Kindly assist.

Downnload the operator manual:
http://www2.panasonic.com/webapp/wcs/stores/servlet/PNAEndecaSearchCmd?N=779832046&Ne=&No=0&Nr=12001&Ns=&Ntk=SupportSearch&URL=

my telephone is lock forget pasword

in the left side of phone is a ringer setting key, put it in big bell symbol

check your user manual, in particular "clearing settings" here is the link http://www.westlakecom.com/KXT7700-User-Guide.pdf