Are there any good publicly-available WordPress training materials (videos, manuals, etc.) that could be used to give content editors a basic overview of WordPress?
We have a handful of blogs on a WordPress server and I’d really like to be able to automate training some more.
VTC and Lynda have very good training videos on this.
I teach a WordPress Training Course and offer a free training manual you might find helpful.
I think the manual will help you get a good overall understanding of how WordPress works and the main sections you can use to update your existing sites. Hope it helps!
I have found this site particularly useful in terms of WordPress video tutorials and training.
I am not affiliated with the above site in any way, just pointing out a resource that I found useful.
Learning WordPress and WordPress.tv are both great resources!
The WordPress Codex is really the first and best place to start for WordPress questions and tutorials.