To have a go at building your own website visit My School Site and create an account there.
The sitebuilding tools and webspace are provided by Moonfruit. If you use a word processing package like Microsoft Word you'll find the Moonfruit interface similar with a toolbar across the top with commands like "Save" and "Edit" and you'll quickly get the hang of it.
There's also a general guide to website building, issues such as testing your site and how to make it easy to use. You can download that by clicking here. It's a 182K Word document ("schoolspack.doc"),
There's also a much longer detailed troubleshooting guide which you can download here. This one's 131K and it's an Excel document.
You can also contact the Moonfruit team if you get stuck by clicking on the "Help" button in the top right-hand corner of the toolbar when you're in the sitebuilder application.