Lots of open source Content Management Systems are available today, developers and contributors are working very hard to improve performance, design and accessibility. It

Alexander Limi, the main person behind the Plone, recently announced that he has accepted a job offer from Google. He will join their user interface design team. Google has already supported many open source projects through Summer of Code program. It will be interesting to see their approach towards Plone. I believe that its a great news for Plone and only good can come from this.

Building Websites With Plone by J. Cameron Cooper is a very useful book for beginners as well as experienced Plone developers.

The book is based on Plone 2.0 series, so some specifics might not work with the older versions. The book assumes that you are familiar with ZOPE and python.