Where can I buy bitcoin in New Zealand?

Could you please elaborate on the various options available to purchase Bitcoin in New Zealand? I'm specifically interested in understanding which platforms or exchanges offer a secure and reliable way to acquire bitcoin in the country. Additionally, I'd appreciate information on any potential risks or considerations I should take into account while making this purchase. Could you also provide a brief overview of the steps involved in the buying process, including any necessary verifications or account setups? Thank you for your assistance in guiding me through this process.