Online book about visual design for multimedia. The content is a bit old (originally written in 1996), but the principles of layout and color are still relevant.
Average Pricing for Learning Management Systems in 2009
LMS pricing for low-cost systems for different sizes of implementations. I've seen complaints on the eLearning Guild discussion board that $50K for 100K users for Moodle was too high. Considering that the average price for that size is over a million dollars, $50K seems quite reasonable to me.
Presentation Zen How to Design & Deliver Presentations Like a Pro (pdf)
Basic concepts for using PowerPoint effectively for delivering presentations, using multimedia learning principles from Richard Mayer. Includes a list of selected readings and example slides.
Free resources for teachers with information on visual literacy, focusing on visual sources of information like maps, diagrams, timelines, and storyboards
Lots of different ways to visualize content and create graphics. Good place to go if stuck on how to represent something visually and create relevant graphics.
Copyright-free images from the Library of Congress and a number of museums and other organizations. Primarily historical photos, with lots of great primary source material.