RichinNJ-
From April 25th -27th, the Mid-Atlantic Bonsai Societies will be having their annual show at the Ramada Inn, East Hanover NJ. The show will have many fine examples of finished bonsai and also have many seminars showing the training, and pruning of bonsai. You might be able to apply some of these techniques when pruning your tree. There will be plenty of vendors selling tools and instructional books. You can also do an online search for photos of Japanese Maples that were pruned to Japanese aesthetics.
Personally, I would do a lot of reading about, and a lot of looking at many bonsai trees before grabbing a pruning saw. Once you cut wood, it's gone. Also, bonsai are created to be viewed from only one vantage point and there is a formal front and a formal back to each tree. Bonsai is not a 360 degree show. No matter what, your tree will be a work-in-progress for years, but it can be fun, too.
Good luck with the project.
Frank