There is enough to know about how to properly put in a ceiling fan, that I do not recommend that it be done by someone who doesn't know what he is doing.
I'm an electrician, and even I wouldn't want to try it by myself, at this point. I've never installed a ceiling fan, and at least the first time or two that I tried, I would want to be assisted by someone who has the experience of having done so before. It's not so much the electrical connections (well within the ability of any competent electrician) but the structural attachment issues.