If you’ve ever harbored any interest in reading (or re-reading) The Structure and Interpretation of Computer Programs please consider joining some of the books4code folks as we work through the SICP MIT OpenCourseWare (free) course. Chris McAvoy has set up a wiki-page with details, and a calendar to subscribe to, to keep us honest. The book is available for free, and so are video lectures, notes, exercise answers, etc … Thanks Jason for getting us to take this up again :-)