Dragging the mouse.
Move your mouse just before the H in Highlighting in the
paragraph above. Now click the left clicker, and drag
your mouse to the right and then down to the end of this
sentence. Don't let go of the clicker until you have
select/highlighted exactly what you are aiming for. If
you have gone too far, you can back up. If you let go
by mistake, click a blank area to turn the highlighting off,
then start again.
You may drag/highlight from
upper left corner to work down the page, or from the bottom
right to work up. Click after the last word in this
paragraph and highlight it working backwards.
Click + Shift Click
Especially on web pages highlighting can be slippery.
One neat trick is to click at one end of the text you want,
and then hold the shift key down while clicking the other
end. Try that on this paragraph.
Double-clicking
Sometimes, all you want to do is highlight one word.
The easiest way to do that is by double-clicking it.
Try Triple clicking
one of the large paragraphs above.
Ctrl + A
Hold the Ctrl key down while you tap the letter A.
This is a keyboard shortcut for the Select All command found
in many Edit Menus.