Knowing truth is an on going process. Nobody can claim to know God perfectly. That is the reason I participate here.
John's 1:1 does not imply that Jesus is God. Word was God, not Word is God.
It may, but I don't know much of modalism.
I don't believe in the orthodox Trinity belief though I believe in the Trinity in the sense of Father, Son and Holy Spirit. They are Three Persons considered in a special way as personified in the Bible though Father and the Holy Spirit are Spirit.
I strongly rely on my personal conviction and the essence of the verses in the Bible without any bias.