"Adobe Reader X" Keyboard Shorcut keys:

 Adobe® Reader® software is the free global standard for reliably viewing, printing, and commenting on PDF documents. It's the only PDF file viewer that can open and interact with all types of PDF content, including forms and multimedia.

Also check:Various keyboard shortcut keys for most of the programs.

Shortcut keys

"Ctrl + plus key(+)"                  Zoom In
"ctrl + minus key(-)"                 Zoom out
"ctrl + R"                                 Add item to library
"CTRl + shift + H"                   Automatically scroll
"hyphen or minus key(-)"          Change scrolling direction reverse/forward
"ctrl + C"                                 Copy
"ctrl + F6"                               Cycle through open document
"DEL"                                     Delete
"Right Arrow(->)"                   Expand the current bookmark
"ctrl + F"                                 Find
"F3"                                        Find next
"shift + F3"                             Find previous
"alt, then ctrl+tab"                   Focus to the toolbar area
"ctrl + End"                            Go to last page
"F1"                                        help
"ctrl + I"                                 item info
"Page down"                         Next page of the open document
"page up"                              Previous page of the open document
"ctrl + P"                                print
"ctrl + home"                           Go to first page page
 "ctrl + space bar then click"     Zoom in temporarily