With the trinity out of the way, Armstrong could teach what Steven Flurry called "one of the very foundational doctrines of the WCG,0 that is, God is a family. The trinity limited God to only three, and undermines God's purposes. God desires to reproduce Himself with his creation. Jesus was the first to enter the God Family. Subsequently, every person has the ability to become part of the Godhead. "There may become billions of God persons." This is not to say that we will be equal with God the Father. Gerald Flurry states, "the kingdom of God is the family of God. And who is the head of the family? Christ? Of course not! The Father is the head of the family. God the Father is the central figure of the gospel!"
The denial of the Trinity is apostasy, as is the belief that we can become part of the Godhead. If someone has these beliefs at the heart of their theology, I cannot see how reading any more from them would be beneficial to me or any other practicing evangelical Christian.
As best as I can put into words, the Holy Spirit is like the power of electricity flowing through the wire. It has no self-conciencousness of its own, but belong to the Father and flows through Christ.