A blogroll is a list of links to blogs or RSS feeds that a blogger likes. It is usually included in the blog's sidebar. You can see my blog here.
If you are interested in the blogs and RSS feeds that I subscribe to, you will find them listed below. By clicking through on any one of them you can also subscribe to them.
You will also find a list of the RSS feeds I generate here.
And, you can learn more about RSS feeds and RSS readers here.