http://www-personal.umich.edu/~bpl/menno.html
When you scroll down, there are lots of Amish sources of information. I think you will enjoy reading these.
Years ago when I was a teen I had a pen pal who was an Amish teen who left the order to become a Mennonite because he wanted to go to college. His name is Sherman Yoder. He still called himself an Amishman, though. I looked for his page but it's not there anymore. If i can find his old address maybe he still lives there in the Indiana community and he may be up to communicating with you. He loved talking about his Amish family. I'll try to get his information in case you're interested.