Trying RSS feeds

The above blog is what I would like to add as an RSS feed. I have never heard of an RSS feed before, so I signed up for Google Reader, to see how it worked. It makes a lot of sense to sign up for Reader. I can imagine it saves a lot of time, however, I don't see an application to my current blog. I tried to create a feed for the above link, but it did not work. However, I will keep on looking for RSS feeds to attach to my blog because it will be very helpful for me and my students.