The Google Font API helps you add web fonts to any web page.
Benefits of the Google Font API include:
- A choice of high quality open source fonts.
- Works in most browsers.
- Extremely easy to use.
- A CSS file hosted on Google's CDN - for speed and reliability
Applying a font is easy: just add a special stylesheet link to your web page, then use the font in a CSS style. Here is the getting started guide for Google Web Fonts API.
It's one simple CSS include required to use these open source fonts from Google. E.g.
<link rel="stylesheet" type="text/css" href="http://fonts.googleapis.com/css?family=Font+Name">
Then adjust your CSS selectors to use the new font ...
CSS selector { font-family: 'Font Name', serif; }
You can view the Google font libray here