There are many different software solutions for subscribing to RSS feeds, we will not attempt to cover them all here.
The RSS aggregator that the CharCon webmaster recommends for novice and pro alike is the Google Reader. You can access the Google Reader at http://www.google.com/reader
You can easily add the RSS feeds for most of your favorite sites (assuming they offer a feed) by clicking the 'Add Subsciption' button and then entering the sites address (i.e. http://www.charcon.org)
There are some more advanced things you can do with feeds, like just get a feed of a particular portion/forum of a site...but you should get the hang of just getting the basic feeds before you dive into the harder stuff.