was facing problems in entering the numbers to save my posts
Do you mean the security code? You should not be required to enter security codes as the website administrator.
I am not at all able to modify my website. It is frustating experience.
What exactly do you want to modify? Please provide more details, and I will direct you to the corresponding tutorials.
You can find answers to many questions, as well as tutorials and video tutorials on our forum http://forum.ucoz.com/ , http://faq.ucoz.com , http://video.ucoz.com
There is also a textbook with the full description of the uCoz website builder: http://book.ucoz.com
I'm not active on the forum anymore. Please contact other forum staff.