To navigate their the repository and find a document you can click on a folder to 'drill-down' to a specific document.  Or use the search button to search any work or phase in a document title or the content of the document.
To view a document, click on the document title.  To download a document, click on the .pdf document icon.

Viewing the Technical Publication documents requires Adobe Acrobat Reader.  To download the viewer for free, click the Adobe icon below.