Google web-fonts are reliable. But if you want to use them and host them on your own server then simply go the stylesheet url. In your case, the urls is
http://fonts.googleapis.com/css?family=Titillium+Web:200
when you visit it then you will see another url in it as follow:
@font-face {
font-family: 'Titillium Web';
font-style: normal;
font-weight: 200;
src: local('Titillium WebThin'), local('TitilliumWeb-Thin'), url(http://themes.googleusercontent.com/static/fonts/titilliumweb/v1/anMUvcNT0H1YN4FII8wpr3XqdloEk0Ij5qwGW4qO9RM.woff) format('woff');
}
after that, copy the url from it. in this case the url is:
http://themes.googleusercontent.com/static/fonts/titilliumweb/v1/anMUvcNT0H1YN4FII8wpr3XqdloEk0Ij5qwGW4qO9RM.woff
when u visit the url, a font file will get downloaded to your computer. upload that file to your web server and include it in your style sheet as follow:
@font-face {
font-family: 'any name of the font you wnat';
src: url(the url to your file on your own server just like u link to an image);
}
Now after inclusion, you can use it anywhere on your site where you desire and where the stylesheet is included by calling font-family: the name of the font you used above;
Any doubt, please ask :)