I have been using Google Reader this past few months and I dare say that it changes the way I read articles in the internet. Before google reader, I rely heavily on google search and checking some good blogs for updates. Now I got Google Reader to aggregate these updates and display them on my mac and iOS devices (using apps like Feedly which is more like browsing a book/newspaper or  Feedler RSS).

For a quick guide on how to use Google Reader, read the Ultimate Google Reader Guide and Really Simple RSS guide.

For visual learners, you may prefer the following videos:

Have fun.