Tracey,
You'll not be disappointed in the NB course. I have used it twice & both times have achieved terrific results. First time, i ended up a 1 performer at work (at this time it's been 3 yrs. in a row). Second time, i am now scheduled to do 2 workshops this summer for elementary teachers.
I only needed to do tape 1 & then tape 6 followed by tape 2 the second time. What this says is that i did not even need to do the entire course again to get results.
I have been listening to the A sides on my way to work & have gleened some additional info that will help me lots for my workshop. There is just wonderful info on the A side of all the tapes. It's really impossible to assimilate all the info that is presented. Nice to say: Once we have the course, we can listen at our leisure.
Good luck 
[This message has been edited by Margaret (edited June 15, 2001).]