you can go to the city library to borrow the road code, two books, but the first thing you need to do is:
1. apply for the basic handling school, and go to the class, then take the test, if you pass.
2. go borrow the book, then read them, take the Learner theory test, then you will have your 6L licence,
then you can ride on the road..
riding bike in NZ is more danger then China, because no many people riding bike on motorway in China. so you'd better to practice hard before you try to ride on highway..