What class teaches how to make a photo book?

There will be a problem: Apple does longer provide any print services for books, calendars, cards, prints. You can now only order print products from third-party providers with project extensions provided at the App Store. You will need to find a class by third-party providers.

See:

Use Project Extensions to order print products in Photos after September 30, 2018 - Apple Support

Post 9/30/2018 Printing Options for Photos - Apple Community

Hello SCBjcm3,

Thank you for using Apple Support Communities! I understand from the information you provided that you’re looking to take a class at the Apple Store for Photos; I'd like to help.

The following link provides all the classes offered. Depending on what you're looking to do, there is surely a class that will meet your needs. You can also use the link to reserve a spot:

Today at Apple - Apple

Hope this helps.

Best Regards.