It's very easy if you use wordpress for your website, everything is already coded, including how to deal with your RSS. Just an email account in google and you can burn your rss and even deliver it via email.
The easiest way to create an RSS feed is to use software. The software I would recommend is FeedForAll (there is a Windows and a Mac version). There is a built-in wizard that will walk you through the process of creating a feed. You can download an evaluation version from http://www.feedforall.com If you prefer to create the feed by hand this website details how to hand code the RSS feed http://www.make-rss-feeds.com Best of luck!
There are plenty of RSS generator that creates RSS for websites but it is not for free. Click this link--> http://www.google.com/#hl=en&source...0&aql=&oq=rss+ge&gs_rfai=&fp=50954f7df8d7ab63