To answer your question, once you have downloaded the font and have it on your PC the quickest way is to open:
CONTROL PANEL > FONTS
Or the longer way round:
MY COMPUTER > DRIVE C > WINDOWS > FONTS
Then drag the font from where you have saved it into the font folder.
It will then install, then open your graphic design software and it will be there ready to use.:icon_smile:
Any problems just give me a shout.