Disheartened with RSS FEEDS

I am really very confused with this RSS FEEDS. As far as I understood it is kind of soft ware which is also called feed reader, it is a way to subscribe to one website and keep your self updated by getting all your favorite new or blogs which will come just by one click one place. To understand it more, I signed into g mail and went into Google reader. I read some news shared by other people. But i am not clear at all since I wanted to subscribe to Daily Herald, I could not and there is no one available to explain, since every one is very busy and I wonder if I will be ever able to complete my "Learning 2.0" ever. sorry!!!