I don't intend to be uninformative but I have found a page with a lot of articles that, combined, should be able to guide you.
There is an article on how municipalities should be deploying city wide wireless networking, and there is a three part series on how to set up your own wireless network. There may be other useful articles at this web site. Please be sure to read about the security issues. There are several articles at that site pertaining to security.