IT Resources
Website
For Users
Plone 2.5 User Manual - A user manual for web site content creators and managers.
Content Creation with Kupu and Other WYSIWYG Editors - A tutorial which introduces the Kupu interface and explains how to insert images, create FAQ pages, and use Kupu's ResolveUID feature.
For Developers
Andy McKay's Definitive Guide to Plone - A book for web site managers, integrators and developers in PDF format.