You can start using the Google Font API in just two steps:

Add a stylesheet link to request the desired web font(s):

Style an element with the requested web font, either in a stylesheet:

CSS selector {

font-family: ‘Font Name’, serif;

}

or with an inline style on the element itself:

Note: When specifying a web font in a CSS style, always list at least one fallback web-safe font in order to avoid unexpected behaviors. In particular, add a CSS generic font name like serif or sans-serif to the end of the list, so the browser can fall back to its default fonts if need be.

For a list of web fonts you can use, see the Google Font Directory.

via Getting Started – Google Font API – Google Code.