Preliminary dates and venues for 2014:

Junior Under 15
Junior Under 17
Junior Under 19
Elite
Expert
Sport
Veteran 30 - 39 yrs
Master 40 - 49 yrs
Super Master 50 - 59 yrs
Grand Master 60+
Hardtail Junior under 19ys (only at Champs)
Hardtail Senior (only at Champs)

The 4 female categories will be:
Junior Women
Elite Women
Expert Women
Master Women

Have a question? A lot of the riders regularly post here about their experiences at this series. It is the official "online thread" and a great source of knowledge.

Another good and helpful thread for DH beginners in general is this one:
http://www.rotorburn.com/forums/showthread.php?44791-DH-etiquette