Sounds like he's covered the main things, so these are my suggestions (in no particular order):
1. Get a debit card from bank - so you can get money out!
2. Get online access to your bank from your smartphone - so you can check your balance
3. Get online access to IRD - so you can claim any tax rebates that might be due after the first year
4. Join as many or as few supermarket loyal schemes are you can cope with!!!
5. Kiwi Saver - join it but check who the default provider is and change it if you want to.
6. The NZ job market goes 'to sleep' as it gets closer to Xmas and doesn't 'wake up' until February, so bare this is mind when he's budgeting.
7. Start looking for the next property to rent / or buy...
8. Get a car... you can't do anything without wheels!!
999. Enjoy it,