Tiffany Brown, an attendee of this year's New York PHP Conference, took some notes during Ilia Alshanetsky's "Introduction to PDO" talk and is sharing them here.
It's a good summary of what the talk was about, and provides a few bits that weren't covered in the slides. If you're looking for a good place to start with researching PDO and its associated technologies, her list is a good place to start.
Each heading is accompanied by at least three points, clearly written as to include the most information. Some examples of the topics covered include: "Why PDO?", "Persistent Connections", "Prepared Statements", and "Retrieving information using PDO".