The lastest version of Flock, soon to be released in beta and codenamed "Cardinal," has improved the way RSS feeds are handled. The feed reader in Flock is called My Newspaper, and it is represented by an icon in the icon bar that looks like a newspaper (what else?) and is positioned just to the left of the icon for starring a favorite (which, in Flock's terminology, equates to marking a site as a favorite).
It was reasonably instinctive to me how to open the My Newspaper sidebar (just click the My Newspaper icon), but how to add a feed to the newspaper didn't seem as immediately obvious. So once I figured out how to do it, I decided to record a short video and upload it to YouTube to illustrate the process.
If you'd like to view the video, click here.
Update 4/30/06: If I had done a bit more research before posting, I might have found the explanation of how to subscribe to feeds in the specifications for the Cardinal distribution of Flock. But like so many others, I first see if I can do something without reading the directions, and only when that fails do I turn to reading the instructions.