[wiradikusuma]

Sorry I don't understand how to use this?

Is the website supposed to be like Google Fonts website where I select a font and it will give me code snippets to paste in my HTML?

[anamexis]

I think it's suggesting font families which have similar characteristics and for which at least one is likely to be installed for a given OS/browser.

[tomhanlon]

Instead of loading a font from Google Fonts you would just use the font-family property for the given typeface:

  font-family: Charter, 'Bitstream Charter', 'Sitka Text', Cambria, serif;

for instance.