The most important details are translation, contents, and intended setting. A compact personal prayer book may emphasize morning and evening prayers, while a service volume may follow a particular jurisdiction, rubrical tradition, or choir arrangement. Review the table of contents and sample pages whenever they are available.

Consider print size, binding, paper durability, ribbons, and portability if the book will be used daily. For parish purchases, verify edition consistency before ordering multiple copies. Bilingual readers should confirm whether languages appear side by side or in separate sections. Ask your priest or choir director when a text will be used liturgically.