One thing you also need to pay attention to is dishing. Here is a great reference for wheelbuilding:

http://www.bbinstitute.com/manual.htm

scroll to the bottom of that page and download:

"Download Chapter 17: Wheel Truing and Repair"

I think you'll find this a much more useful reference for wheelbuilding than JB. Have patience and you'll be very happy. It's not easy at first to balance all of the "goals", so don't be afraid to back up and redo some steps. The more you build, the easier it gets. Good luck!