It's now up for sale on Lulu.com here:
http://www.lulu.com/content/2621678
If this is all new to you then you can check out the background behind this here:
http://www.apug.org/forums/forum56/3...reprinted.html
Volume 4 will be released at the end of the summer and volume 5 may not be ready until late this fall depending upon how hefty my course load is.