If you are interested in the Russian chant tradition, you can purchase books with all the tones from St. Vladimir's Seminary Bookstore. They have one volume for Vespers with all 8 tone in the Bakhmetev Obikhod, the Kievan tones (by far my preference) and also in Carpatho-Rusyn Tones. It also includes several melodies / compositions for the fixed hymns of the service. There is a much larger volume for the Divine Liturgy; but I am not aware of an Orthros (Matins) book. There are also volumes for the Presanctiifed Liturgy, Holy Week (3 volumes) and Pascha. I believe there are a number of donwloads availabe from the oca.org web-site. You might also check out the Psalm.org web-site. If you live in the Northeast, St Vladimir's Semianry has a liturgical retreat every summer, I think in June. You might check out their web-site. The ROCOR has, or at least had, an annual choir retreat at Jordanville; but I think it was all Slavonic text music (I could be wrong or out of date on that, perhaps some one else might know). I think most of us were personally trained in the old days.