To apply for an International Standard Book Number online took about 3 minutes for both of the books, here are the simple steps you need to take to register an ISBN for your own book…
We live in New Zealand so the first think I did was to Google “ISBN New Zealand” (just add your country), which took me to the National Library ISN site. For me, I needed to enter our business name, address, what type of book we were publishing (hardcover; ibook), where people can buy our book, and finally our launch date (estimated).
Super easy!