"Guide for Altar Servers" by Michael from Liguori Publications
"This short, interactive booklet is an essential tool for any youth
preparing to serve at Mass or training for the role of acolyte. Key
terms, liturgical guidance, and practical tips are presented in a simple
and friendly tone with questions, activities, and full-color photos.
Servers continually change as older children move to other roles or
serve the parish in other ways, and new children require training. Guide
for Altar Servers is a practical, complete, and cost-effective tool."