Try this page. It’s a link to Wikipedia which contains a lot of information. It has a lot of links which support the data, I recommend you go to those pages and source the information directly.
Just as a sidenote, your teacher may not consider Fluther or Wikipedia to be valid internet sources. Fluther’s information, as is Wikipedia’s and a lot of the internet in general, is not guaranteed to be correct or not. Sometimes people lie just for the fun of it, and if you don’t know it’s a lie, you may actually repeat something such as “Muhammed Ali once bit the head off a bat in the ring”.
Try his official website for information. That would be a great information source.
But really, for the best info, you should go to a library. Ask the librarian for help, they’re there to help you find the books you need. Libraries are the best information source when making high quality and true presentations, simply because information on the internet is just as likely to be false as it is to be true, whereas this is not the same in a library. Good luck on your presentation.