See the thread http://www.talkgraphics.com/showthread.php?t=37684 for links to all the resources for Web Designer.

The Xara documentation in an online Google document. It is easily printed to pdf if you have one of the many printer drivers that are available.

You can also use your web browsers File menu > Save As to save the complete html document. Open the document in your html editor or Microsoft Word or Adobe Acrobat (full version not the viewer) and print to pdf.