If you have enquiries from participants who don’t know what level to enter for their first, or successive events, these new ONZ reference tools will be a useful asset. 

Gene Beveridge has put together a helpful guide for newcomers to orienteering, focusing on how to choose the right course.

Orienteering events offer courses that vary in length and navigational difficulty. This guide helps participants choose a course suited to their skill level, while also introducing key map features. 
For newcomers who are unfamiliar with orienteering maps, the following novice starter advice is available:

Quick course guide for beginners 
If you know orienteers who are keen to get started right away and don’t have time to review the map examples:

• Families and children: White / Easy  It is best starting with White courses for forest or farm events, and Easy courses for sprint orienteering. 

• Adults: Yellow / Moderate for sprint events. Yellow is the best choice for forest / farm and Moderate for sprint events. After completing a few courses, it’s a good idea to return to these map guides to reassess your progress and adjust your course choice accordingly.
Link to:  ‘Choose the right course’  

Course navigational difficulty 
The ONZ website also includes a handy reference table to explain the navigational challenges within in each course class, helping both new and practising orienteers know what to expect.