Best recommendations of resources in Logos on the Trinity- focusing on the subordination debate.
In Logos, I would start with the Cappadocian fathers, but from my own study Robert Letham's Holy Trinity is stellar and Michael Reeves's Delighting in the Trinity is a great accessible (short) volume. Sadly, neither are available in Logos but are in other electronic apps.
Bill
There is a Mobile Ed resource https://www.logos.com/product/136786/mobile-ed-th361-perspectives-on-the-trinity-eternal-generation-and-subordination-in-tension?utm_source=academic.logos.com&utm_medium=blog&utm_content=2017-05-31-bird-tackle-tough-topics-part1&utm_campaign=promo-mobileedtoughtopics
You could check this out too https://academic.logos.com/the-fight-for-the-trinity-mike-bird-explains-the-eternal-subordination-debate-part-1/
You could do a search on "subordination of Christ" to see what you have available in Logos
For an overview of the historical theological debate, I would say John Behr's study, although if you want to save a bit, you could just grab the 1st volume which is available separately. Eventually you will want to study Against Eunomius, and this is probably the best edition of it in Logos.
But the issues show up in lots of writers - and different writers do have slightly different things to say. If you know to look for it, it will pop up in countless writers from the early church. There are lots of productive places to dive in, but I picked Basil because his understanding of it largely was the basis for the Council of Constantinople that happened right after his death, and so has been the basis for a great deal of theology ever since.
As a Western Christian, I must say that the "Athanasian" Creed is still an important summary, even if some of the technical language is no longer as clear as I wish:
For the right faith is that we believe and confess that our Lord Jesus Christ, the Son of God, is God and man. God of the substance of the Father, begotten before the worlds; and man of substance of His mother, born in the world. Perfect God and perfect man, of a reasonable soul and human flesh subsisting. Equal to the Father as touching His Godhead, and inferior to the Father as touching His manhood. Who, although He is God and man, yet He is not two, but one Christ. One, not by conversion of the Godhead into flesh, but by taking of that manhood into God. One altogether, not by confusion of substance, but by unity of person.Historic Creeds and Confessions. (1997). (electronic ed.). Oak Harbor: Lexham Press.