To download a resource, right-click on the supplied link and choose to save the linked item to your disk, or download all items in a complete zip package.
A document for reviewers containing some useful information on getting up and running with Scrivener can be downloaded here. Also note that the software comes with a two-page QuickStart leaflet, which can be accessed from the Help menu.
A small collection of sample Scrivener projects can be downloaded here. The samples include the documents used to create some of the screenshots on the main product page, as well as a few extra.
A few high-resolution screenshots have been included in the aforementioned zip package.