The early weeks - laying the groundwork and getting the strategy clear - have been particularly valuable for me. I'd recommend them to anyone involved in website development and management.
If podcasts aren't your thing, don't worry. Alongside every audio download is an excellent text summary of what he's covering with lots of examples.
Getting Our Hands Dirty: Turning the theoretical into the practical - podcast and summaries. Paul Boag and colleagues take all they've have learnt in the past and apply it to a rebuild of boagworld.com
Building websites for ROI - podcasts by Paul Boag Another excellent series of podcasts with related summary articles. For me, this series is even better than the current one.
Website Owners Manual - book by Paul Boag If you only own one book to help you plan and manage your website, it should be this one.