Attached is a screen shot with a few remarks indicating bugs in the document in installation.
You may also choose to add a note warning users to ensure that the file Default.aspx is one of the declared "default documents" for this website, since this is not enabled by default. Consequently the invocation of the Sitefinity administration page, via http://localhost/telerik/Sitefinity3.0/Admin
results with the "You are not authorized to view this page
" error message.