please help me to advice how to join booking.com

Hi Peo

 This is partner forum not support direct forum.

For that you should phone them on the contact us page at bottom.

As for Setup rooms and Rate plans under Extranet, please review the Solutions and Partner Help menus up top. Also try the seartch feature up top for guides and other similar topics already answered.

Kind Regards

Hi! Mrs. PEO SOMNAN,

I love your photo profile.

Please have a look at this link it might help you.

https://partner.booking.com/en-gb/help/rates-availability/how-can-i-upd…

Wish you a great start.