Chooch Factor, welcome to the Byzantine Rite....
I taught cathechism for many years in our Ukrainian Catholic parish. By far, the best sourse I used concerning the Divine Liturgy was the book/ workbook called:
"Liturgical Catechism on the Sacrifice of the Divine Liturgy"
Put out by the - Byzantine- Slavonic Rite Catholic Exarchate of Pittsburgh
I found a copy on the "Goodreads" website for you to see........https://www.goodreads.com/book/show...m-on-the-sacrifice-of-the-divine-liturgy
It is somewhat dated now, and may be out of print, but I still see it come up for sale on Ebay and used book sites.
It contains a few illustrations, it's in English with some Slavonic terms defined in English, a short explanation of each part of the Liturgy, and study guide questions. The preface also includes explanations about Eastern church architecture, the icon screen, vestments, etc.
It is probably geared to junior and senior high students, but I am sure that even younger people would benefit from it with parental assistance.
The book is excellent and should be required reading by older parishioners too...lol...
Hope this is helpful.