As we had already told you that you can use Google Web Fonts on your Webpage or on WordPress blog by adding some simple lines, but there are some people too who don’t have blogs or web site and they wanna use those fonts on there computers.
So to install those fonts first go to Google Web Fonts directory and navigate through the hundreds of fonts and select the best one for you, once you find the font which you wanna use just click on the Add To Collection button of it.
Once you had added enough fonts which you wanna install on your computer just click on the button say Download your collection at the top right corner of the screen.
You will get a Zip file after download, just extract it and you will get your Fonts, now you need to copy and paste them on %WinDir%/Fonts, Windows will automatically install it.
Now open your favorite program in which you wanna use it and you will find your newly installed font there and its ready to use.