For those interested in knowing more about the foundations of their own worship, Paul F. Bradshaw provides in Early Christian Worship a sound introduction to worship in the first four centuries of the Church.
Bradshaw not only describes what rites Christians actually performed during this period but also explains why they acted as they did. He answers such questions as "Why did they choose some patterns instead of others?" "What did they understand themselves to be doing in their worship?" "What effect did all this have on developing Christian ideas, and what effect did the ideas in turn have on the worship?"