Hi Andy,
Welcome to the forum.
Do you have the NN3 with tension screw knob on top of lower rotator? If so you should differently upgrade to the newer MKII rotator:
http://store.nodalninja.com/nn3_p/n3ii-r.htm
On what click stops you need there are panorama calculators out there and we even have one at:
http://www.nodalninja.com/pano_calculations.html
And a chart at:
http://www.nodalninja.com/product_selector.html
Basically you want approx 30% overlap between images - it's ok if a little under or over.
There are many work flows out there and some can be very user specific depending on equipment, type of panoramas, software, output needs etc. The primary purpose of our forum isn't so much to teach people how to shoot panoramas rather than teach or advise folks on how to use our products correctly in the process. If you are just starting out one answer can lead to 2 questions. It is really best to research other websites and tutorials that are able to take more time in teaching the techniques.
Just Google "how to panorama tutorials" and you'll see many.
Once you get going with panoramas it can be lots of fun and very rewarding.
Cheers
Bill