RSS which stands for really simple syndication is a format that is associated with the XML family of file formatting. It functions by continuously running through the websites to scan for updates. It then sends these updates to all of the people who are subscribed to these websites using a feed. This is used most often in web syndication.

To be able to use an RSS feed, you need to have an aggregator, also known as a feed reader. These aggregators are available widely online, so it won't be that hard to scour the net to find the one that you're looking for. There are a variety of aggregators to choose from. Best of all is that you can download them for free.