This is the default PWF personal web page for a user and its appearance indicates that this user has not yet set up a personalised page.
If this is the index page for your account, this file is "public_html/index.html" in your PWF filespace. The documentation for this service is available on the CS website - see the online leaflet Web Pages on the PWF.
You may edit this PWFweb content in a number of ways:
If you are new to creating web pages, Dreamweaver (available on the PWF application menu) is an excellent tool for giving you a what-you-see-is-what-you-get view of the page you are editing, without requiring you to learn the 'HTML' syntax used within the page.
HTMLdog has some excellent online tutorials for creating web pages in HTML.
There are also many useful courses available from the University Computing Service. In particular you may be interested in the Introduction to HTML course.
If you get stuck when trying to deal with your PWF web pages, feel free to contact the UCS helpdesk.