New learning module, with some extra prep work for writing assignments

The Week 3 learning module is now UP. It contains the prime study tool, the Chapter 4 concept guide, plus a mini-quiz for secondary work. Finally, it has Writing Assignment 0, which outlines some reading you can do to prepare for the other writing assignments.

Writing Assignment 0 is a study assignment, not for points on your semester grade -- although all the points you eventually earn in Writing Assignments 1, 2 and 3 depend on what you do here.