I've had several questions about how to subscribe to notification emails from the blog, so obviously it is not intuitive.
You need to register and log in. Once you are logged in, you can click on the link below each blog post that says "subscribe blog" and you'll get notified of new posts by me. If you click on "subscribe post" you'll get notified of new comments on that post only. You get auto-subscribed to anything you comment on.