I recommend that you subscribe to the Journal of Japanese Gardening. They have pruning articles in almost every issue.

Here is a link that might be useful: Journal of Japanese Gardening

Skyridgegarden,
if you put 'pruning pine' into the search field on this site, 2 pages of posts will come up. You could also try pruning maple etc.

For basics of pine pruning, I do not know of any books in English suitable for Japanese styles. Bonsai Today's "Pines", although written for bonsai, can give you an introduction to pine physiology - a requisite for training healthy pines! It covers black and white pines.

For pines that are already somewhat shaped, check out the link below for maintainance info. Here is a related link for maple http://www.botanysaurus.com/jg/prunemaples.html

Here is a link that might be useful: Maintaining Temple Style Black Pine