I started with the same machine (NEMA34 but it shouldn't matter).
The instructions here: http://www.cncrouterparts.com/cad/20...v2016Q1_14.pdf beginning in section 7, page 239 are pretty straightforward. You say it's the plug and play kit, you got the spindle, VDF, controllers, etc from them? Perhaps take pictures of where you're stuck or inventory what you have and we can help. What are you specifically stuck on?