Greg Notess, one of the first to see the possibilities of screencasting in libraries, has just announced that his new book, Screencasting for Libraries, part of the excellent ALA Tech Set series, has now been published. I had a chance to review this title a couple of months ago and found it an excellent guide for those getting started, and it also includes some good tools and suggestions for the seasoned screencaster.
There's a companion website that provides a couple of useful tools, but I found the section where Greg covers chapter 5, Implementation, fascinating. In chapter 5 Greg walks you through 12 different projects, using several different approaches and tools. In the companion website, you can actually see the end result of each of those projects - a wonderful (and obvious, for this subject) was to complete the learning loop.