RSS in Plain Language- URL:

Feed Me: A gentle introduction to Internet feeds

RSS Feed Aggregators

Google Reader Screencast:

Using Google Reader

Blogs I Read:

I subscribe to a number of blogs; here are a few that I recommend-

Trackback: As you read other people's blogs, you might come across the term "trackback" or "ping". According to Wikipedia, a Trackback is one of three types of Linkbacks, methods for Web authors to request notification when somebody links to one of their documents. This enables authors to keep track of who is linking to, or referring to their articles. Some weblog software programs, such as Wordpress, Movable Type and Community Server, support automatic pingbacks where all the links in a published article can be pinged when the article is published. The term is used colloquially for any kind of Linkback.
A Trackback is an acknowledgment. This acknowledgment is sent via a network signal (ping) from the originating site to the receiving site. The receptor often publishes a link back to the originator indicating its worthiness. Trackback requires both sites to be Trackback enabled in order to establish this communication. Trackback does not require the originating site to be physically linked to the receiving site.
Trackbacks are used primarily to facilitate communication between blogs; if a blogger writes a new entry commenting on, or referring to, an entry found at another blog, and both blogging tools support the TrackBack protocol, then the commenting blogger can notify the other blog with a "TrackBack ping"; the receiving blog will typically display summaries of, and links to, all the commenting entries below the original entry. This allows for conversations spanning several blogs that readers can easily follow.