It isn't essential to do a lot of reading before coming on the course, but these articles may help to prepare you for the approach that will be used.

Modern acupuncture

The Origin of Western Nedical Acupuncture: Felix Mann's Acupuncture Revolution
Is Acupuncture CAM?
Where to Place the Needle and for How Long?
Acupuncture, Touch, and the Placebo Response

Chinese medicine (if you are interested in this)

The Making of Modern Chinese Medicine 1850–1960, by Bridie Andrews
(review of a book with an important section on acupuncture).
The Art of Medicine in Early China

In any case, please revise any items of anatomy that are not fresh in your memory!