excel shortcut keys which can improve the speed?

Work table in the mobile and rolling up, down, left or right arrow keys to move the cell
Moved to the edge of the current data: CTRL + arrow keys
Moved to the first line: HOME
Moved to the beginning of the worksheet: CTRL + HOME
Move to the last worksheet cell. : CTRL + END
Moving down one screen: PAGE DOWN
Move up one screen: PAGE UP
Move to the right on the screen: ALT + PAGE DOWN
Left screen: ALT + PAGE UP
Move to the next workbook worksheet: CTRL + PAGE DOWN
Move to the previous workbook worksheet: CTRL + PAGE UP
Move to the next workbook or window: CTRL + F6 or CTRL + TAB
Move to the previous workbook or window: CTRL + SHIFT + F6
Split the work has been moved to the next book in the pane: F6
Been moved to split the work of the previous book pane: SHIFT + F6
Scroll and display the activities of the cell: CTRL + BACKSPACE
Show that "positioning" dialog: F5
Show the "Find" dialog box: SHIFT + F5
Repeat the last "Find" operations: SHIFT + F4
Worksheet in the protection of non-locking move between cells: TAB

END mode at the work table in the mobile
END mode turned on or off: END
Or columns in a row within a block of data for mobile: END, arrow keys
Move to the last worksheet cell.: END, HOME
In the current line to the right to move to the last non-blank cells. : END, ENTER

In a "rolling lock" mode mobile work table
Scroll Lock turned on or off: SCROLL LOCK
Moved to the window in the upper left corner of the cell Office: HOME
Moved to the bottom right corner of the window in the cell Agency: END
Scroll up or down line: on the arrow keys or the arrow keys
Scroll left or right one: the arrow keys left or right arrow keys

Preview and print the document for
Display the "Print" dialog box: CTRL + P
When in print preview:
When the zoom when mobile in the document: the arrow keys
When the narrowing is displayed, each time rolling in the document page: PAGE UP
When the narrowing is displayed, scroll to the first page: CTRL + the arrow keys
When the narrowing is displayed, scroll down to the last page: CTRL + Down arrow key