We purchased the CD at the NG Convention last year. It is a great resource and I have already used it many times!!
On the down side, I have experienced a crash or two while using the CD. It is accessing a lot of information though. It gives you an option of saving the info to your hard drive, and you can run the program from there which helped. If the program starts to run sluggish, I just restart and it works fine.
The biggest benefit, all pictures, plans, articles, and everything else can be either saved as a separate PDF and/or printed. SO, if you want a set of plans from the book, you can print them off. Definitely worth the price for me....
Casey