Originated From Tipnut
You can try visiting this site : howtomakeahat.com, there are many kinds of hats included in the site along with the process of how to make it.
Here are three web sites for three different types of hats.
http://www.howtomakeahat.com/
http://www.vintagesewing.info/1950s/52-hmh/hmh-042.html
http://www.ehow.com/how_5154357_make-mad-hatter-hat.html
Other people asked questions on similar topics, check out the answers they received:
Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them