Download the Guide to Acrobat 9

Unlike earlier versions, Acrobat 9 doesn’t include a PDF of its Help file. If you want to download Adobe’s comprehensive (and printable) “Using Acrobat 9 Pro”, go to http://help.adobe.com/en_US/Acrobat/9.0/Professional/acrobat_pro_9.0_help.pdf.

It’s 504 pages of bookmarked, hyperlinked Acrobat 9 gold.