RSS, huh? There are differing opinions as to what the letters R S S stand for. And, it's not really important anyway.
RSS is the easy, efficient way to see the new things on the web that interest you. New information comes to you, you don't need to go out and look for it.
It's kind of like the difference between Netflix and the traditional neighborhood video store. If you want to see Young Frankenstein, you tell Netflix and in a day or two you'll find it in your mail box. Or, you drive to your local video store and hope they have it on the shelf. If not, you wasted your time and gas.
All you need is a feed reader. Some browsers like IE7 and Safari have built-in feed readers. There are also numerous desktop feed readers, many free like FeedReader or Omea Reader. The best feed readers are the Web-based readers like Google Reader and Bloglines. By using one of these, you can read your RSS subscriptions using any computer any place you have an internet connection.
Listen to a podcast What is RSS, Anyway?
A brief, rudimentary, one-page explanation of RSS with links to numerous resources ...
What Is RSS? RSS Explained - www.WhatIsRSS.com