Online store connection

Are you able to create a PDF file for that book? If so hold down the Option key and click on the Buy Book button.  That will give you a PDF file that is the same as was uploaded to Apple when they were still offering print services.

 If that is successful there's a 3rd party book provider which used to do the printing for Apple as a sub-contractor, Mimeo, that will take PDF files created by iPhoto and Photos and print and bind books and calendars. 

Also you can upload the PDF file to PrestoPhotos which can also print and bind books and calendars from iPhoto or Photos pdf files.  They've been doing it for some time now.  

Use the PrestoPhotos or Mimeo links above for direct access to the PDF file uploading and book/calendar ordering page for each site. 

You don't, in a nutshell. Apple ceased offering print services more than two years ago. You can export a copy of your work as a pdf and find a third party service.