https://heroevents.eu/navigator-co-driver/
https://www.classicrallyservices.co.uk/ ... on-course/
https://www.vscc.co.uk/vsccMedia/1946.pdf
https://donbarrow.co.uk/rally-navigation-training/
Lots of useful info here for anyone that wants to look at getting into rally navigation at every level of the sport.
If there i any of this that you do not understand get in touch with me.