A shortcut is a way of doing one thing in a simpler way.
For example, if you want to duplicate an object, there is
the long waywhich is:
first selecting the object, moving your mouse to the copy
button then moving your mouse to the position or page where you want to have
the duplicate, then move your mouse to the paste or duplicate button.
The short way would be to select the object, press CTRL-C,
move to the position where you want the object, press CTRL-V. Done in half
So here the most used keyboard shortcuts
CTRL C: Copy the selected object
CTRL V: Paste the previously copied object.
CTRL S: Save the document (do this as often as you think
CTRL Z: Undo the last action
CTRL Y: Redo the previous action
CTRL B: Bold the selected text
CTRL I: Italic the selected text
The most used would be this one:
roller: This will zoom the page while you are rolling your mouse middle
button in one direction or the other.