Help is available via the ? icons on /content
pages, via the chat window on /content
pages or via the Sites wiki at http://wiki.seethespark.com/wiki/Sites
Sites are quite basic at the moment but the more you use features the more work will be done to improve them and extend functionality.
A few built in page types are available. A simple blogging engine is available at <your Sites address>/blog. Adding /content to the end allows the usual content changes but adding /edit to the end brings up the blog editor. Inbound link tracking is available at <your Sites address>/l/edit. Usage is a bit fiddly so you should refer to the help wiki for assistance. Both of these features were designed for internal use so are not particularly intuitive. The more they are used or commented on the more likely we are to improve the interfaces.
More advanced control over how your page looks is possible by clicking on the page </> icon in the top right of any editable area. This allows you to edit the underlying HTML.