RSS
  ‘RSS’ is an acronym that may stand for ‘Rich Site Summary’, ‘RDF Site Summary’, or ‘Really Simple Syndication’. RSS, regardless of version, is an XML-based file format that is used for the syndication of sites, that is, periodic sending of site updates to users who choose to receive those updates. RSS is popular among news sites where it is used to send news headlines to users.

RSS Feed
  An ‘RSS feed’ is a source of RSS updates for a given website. News websites often have ‘RSS feeds’ from which users can be sent news headlines as they are published.

RSS Reader
  RSS content can be read using software called an “RSS reader”, “feed reader” or an “aggregator”. The user subscribes to a feed by entering the feed’s link into the reader or by clicking an RSS icon in a browser that initiates the subscription process. The reader checks the user’s subscribed feeds regularly for new content, downloading any updates that it finds. Examples of RSS Readers are: Google Reader, My Yahoo!, Netvibes. You may also use your Internet Browser like Microsoft’s IE, Mozilla’s Firefox or Opera. Mozilla’s Thunderbird email software can also act as a

Setting up RSS on your browser
 

Your browser can act as an RSS Reader. Bookmarks will be created and it will be updated. You just need to click on the 'SUBSCRIBE' link when you see the RSS logo. Some samples as follows in different browsers:

Using Internet Explorer or IE

Using Opera

Using Firefox

Setting up RSS on Mozilla's Thunderbird Email program
 

In Mozilla's Thunderbird Email program, there is a feature to read RSS. Just like setting up an email account, you need to choose RSS instead. Here are some simple steps