Many pages on our system are customisable by you - and you can even add new pages for your own purposes to be used for any number of reasons (eg. you could create a promotions page where you highlight your current promotions and deals for the current month).
However our system also has a number of dynamically generated pages - such as the home page, the contact-us page etc. that has back-end scripting and software running live on the page.
While you can't directly affect the content of the dynamically generated content - you CAN edit and manage the content that shows up above the dynamic content via the Software Pages in the CMS.
Here's a video that covers some of the basics how to manage this content:
This video was only intended to give you a brief overview of what's possible - if there's content you're wanting to edit or update that you don't see covered here - please contact Webninja Support for further information and advice.