May i know where do i obtain reference books to start xhtml from sratch? i am barely familiar with html and now xhtml, thus i would like to start afresh with xhtml.

Check out this link - http://www.perfectxml.com/ph/XHTMLExample.pdf

You might need this also - http://www.pagebreeze.com/

Also take a look at your local library (If you have one). I sometimes go to mine and they have quite a good computing section which covers a wide range of topics.