What Is RSS?
The term RSS refers to a syndication format, sometimes known as Really Simple Syndication or Rich Site Summary. Each RSS feed is simply a text document containing a list of content items. The text document contains the headline, description and link for content items available on a web site.
For example, the Sunstone RSS feed contains overviews of recent projects that Sunstone has completed or has undertaken.
Why RSS?
This format may look strange in a web browser, perhaps even unreadable, but there are a range of tools and technologies that leverage this common standard formatting. Similarly, HTML tagging, the code behind a web page, is unreadable unless viewed via a web browser which understands how to present the HTML code. Rather than use a web browser or even a text editor to view a particular RSS feed, you will view RSS feeds through RSS readers.
What are RSS readers?
RSS readers allow you to subscribe to RSS feeds much like web browsers allow you to view web pages. The RSS reader will automatically update on some regular schedule and display the new articles from the feeds you have supplied to the reader. Some RSS readers notify you when a new item has appeared from one of your feeds.
This format for consuming information has a lot of interesting possibilities, including the common perception that information can be consumed in greater volume via RSS than by browsing from web site to web site.
How do I get started?
There are many other RSS readers, and you may wish to learn more about the options. There is a list of readers at Google and Yahoo.
I have my RSS reader. Now what?
After obtaining your RSS reader you can then subscribe to RSS feeds. First, select RSS feeds from the content providers that interest you. Or you may identify feeds on web sites, often marked by a small orange XML button. 
When you have opened the RSS feed in your browser and see the XML data, then highlight the URL of that feed and copy it to your clipboard. Then, return to your RSS reader and follow the instructions for your particular reader for adding a new feed. The URL you copied to your clipboard will be the location your RSS reader will require to subscribe to that feed.
Where are Sunstone's RSS feeds?
Sunstone's feeds are integrated into the site in various locations.You can identify them by locating the small orange XML button.