The Principles of Written English workbooks accompany the online course, College Writing 2x, Principles of Written English, a series of three courses offered by College Writing Programs of the University of California, Berkeley through edX.org. You do not need to have taken the first course to benefit from using the workbooks.
This workbooks offer additional ways to practice writing, editing, and reviewing the materials for the online course. The workbooks include writing prompts, vocabulary lists, and editing and grammar exercises (with suggested answers).
If you would like to purchase this workbook and are not taking the course, you may still find use for the materials. However, it should be noted that the course is offered free of charge, so you are welcome to join the live course when it is being offered. Information on how to do so and the website address are noted in the workbook’s introduction.