I think I might be able to help you a little bit. When I saw your question I then reached for my copy of The Didache. Here's what I have. It's part of series of books from the Paulist Press (#6). The series is called "ANCIENT CHRISTIAN WRITERS: The Works Of The Fathers In Translation" Edited by Johannes Quasten, S.T.D. and Joseph C. Plumpe, Ph. D., The Catholic University of America
Washington, D.C. (1948). Newly Translated and Annotated, by James A. Kleist, S.J., Ph.D., Professor of Classical Languages, St. Louis University, St. Louis, MO.
The book has:
The Didache (The Teachings of the 12 Apostles)
The Epistle of Barnabas
The Esiptles and the Martydom of St. Polycarp
The Fragments of Papias
The Epistle to Diognetus
and the notes of each book.
Here’s some examples of what The Didache teaches about:
* Epitome of Christain morality, suited to pagans candidates
* Practice of Christian virtue
* Vices to be shunned
* Ritual or liturgical summary
* Explains the rite of baptism,by immersion & by aspersion
* Christian practice of fasting and prayer
* Prayers to be used at the private or domestic celebration of
of the Eucharist
* Church organization and church life
* Reference to the regular Sunday observance
* Rules for proper behavior toward bishops and deacons
I hope that helps.