Google does a lot more than just being a search engine. But have you actually had a look at the corporate side of Google? I suggest you check it out, because you can learn a lot of things about how Google became what it is today.
But aside from that, you should check out everything Google has to offer by visiting http://www.google.com/press/descriptions.html
If you actually read Google’s Corporate Information, you could use them as a foundation of starting your own small business.