The Business Writing Center offers online courses teaching a broad range of business writing skills, from basic mechanics to proofreading and editing.
Students complete the courses at their own paces from their homes or offices.
They then receive certificates of completion and letters of reference. The highly individualized courses are taught by professors of business writing from accredited institutions. That Works, Individualized Tutorial, and Strictly Business. I have just completed Dr Hogan's course, and yes, it was worthwhile and, in my opinion, value for the money. I am not one to give fulsome praise where it is not due.