John Kotter wrote the books (literally) on how to lead change. He laid out six important areas for effecting change: creating a sense of urgency, creating a compelling vision, forming a guiding coalition, communicating widely to gain alignment, gaining short-term wins and momentum, and integrating the changes into the culture. His advice is invaluable for understanding the process and leadership of change.
Great blog post by Bill Ferriter (The Tempered Radical) on the five essential Twitter hashtags that will help ed leaders access quality content efficiently.