Create a menu bar and add html pages

I have a script installed. this is a shopping cart script. I need someone who can make a tutorial for this script. I need the following options to make tutorial. 1. How to add html pages ? 2. How to add pages to navigation menu ? 3. How to change the design and layout ? ( I mean how to find the css and html pages easily ) 4. how will i edit the pages using html and css My maximum budget is $15. If you can do it now then please bid.