CPT entries grouped by a custom taxonomy and filtered by a Date Field

In the WPDevDesign Facebook group, a user asked:

In this members-only tutorial, we shall

• loop through all the terms of a book_category taxonomy
• construct a meta query array wherein a date_live date field added using ACF is checked for its value between the first and last days of the current month
• for each taxonomy term create a WP_Query object having all the entries of the book post type that belong to that term AND meeting the above meta query requirement i.e., the month of date-type custom field's value matching the current month.
• output the taxonomy term headings and book titles in the loop

to have entries of a CPT grouped by a taxonomy where the date-type custom field's value falls in the current month.

Here's the Code