I am about to launch my first blog and have done the plugins etc but now want to know what I can do with the RSS option - I have never used RSS before or anything related to it so have no idea how to use to my benefit, so can anyone advise please?
At a high level, an RSS feed is just an XML document that your software puts onto your server. So if you have www.yourblog.com, the blogging software might put the rss feed at www.yourblog.com/feed/ (wordpress would). Everytime you make a change, the change will be reflected in your XML.
The way it works is that other people can subscribe to your blog by adding the feed url (the path to the XML doc) to their RSS reader. Their reader will then go check that URL for new content at intervals, in order to keep the user up to date with your content.