I think this was a really nice interview about the Killington World Cup Course with lots of good background in what goes into it.

http://www.stowetoday.com/stowe_reporter/sports/p-j-dewey-locals-play-key-roles-at-world-cup/article_925ca10e-d5e8-11e7-b1b3-8728bbc8e12c.html

RACING local try NASTAR.  http://skidome.org/skidome2/racing/how-to/racing-beginners-tips/

Once you can ski ride a Blue The issue is basic tactics. Fun to learn 

Took the time to have 2 versions one for Ski one for the normal everyday snowboard. Key is edges if the person wants to hold on hardpack.   

http://skidome.org/skidome2/racing/how-to/1st-time-racers/