Here is the course.
There are four books that are required or recommended:
(1) Writing and Thinking: A Handbook of Composition and Revision, Norman Foerster and J. M. Steadman Jr., with foreword by Jean F. Moroney. Paper Tiger, N.J., (2000).
(2) Rex Barks: Diagramming Sentences Made Easy, Phyllis
Davenport, Second Renaissance Books, (1999).
(3) The Elements of Style, William Strunk and E.B. White, 4th
edition with foreword by Roger Angell, Longman (1999).
(4) A Dictionary of Modern English Usage, H.W. Fowler, 2nd
revised edition, Oxford University Press (2003).
The first two are ARI-approved texts. Writing and Thinking is published by ARI-associated The Paper Tiger. Jean Moroney is the wife of Harry Binswanger, Official Objectivism's number 2.
Rex Barks is also published by The Paper Tiger, and is favored by ARIans.