Q. 1. What is an Ordo?

A. 1. An Ordo tells you what Mass and Office are to be said on a particular day, whether any commemorations or other liturgical rites are to take place, whether votive Masses are permitted, etc...

Q. 2. Would you recommend an Ordo to a layperson?

A. 2. It depends on their needs. If they need to know today, or in advance, what readings shall take place during Holy Mass, or what Saints are celebrate on what date, then the Ordo is a beneficial tool to have. It contains lots of interesting information such as Feasts that are celebrated only in certain Dioceses, pastoral notes, the duration of the Liturgical Seasons, etc...