A lot of people say that waxing and tuning are a combination of art, science and magic. There are many somewhat differing practices employed. Since I have no independent waxing expertise, I settled on a waxing approach that is manageable from a time standpoint and easy. See http://www.lacyslatherworks.com/
The author is a contributor here.
Waxing is mindless but fun.
For tuning products I mostly use the Beast line from http://www.the-raceplace.com/
located in Bend Oregon. That is also where I also go to have new skis prepped. The owner, Scott Holmer and his family and staff are all very knowlegable so you don't have to worry about someone in the back shop learning their craft on your new skis. Tognar Tool works also has good stuff.