Conan,
You've done well to do your research. And I'm glad to hear the people around you were aware the JWs are a cult. But even then I didn't even know what cult meant beyond legalistic. Add to that, it's hard to find fault because they're so gosh-darned polite. Polite maybe, but that does not make them right.
Re the Trinity, it means God in three persons, not three gods. So the Father and Son are different persons. Jesus is God because he has the same divine nature as the Father. Humans have a different nature subject to hunger, tiredness and decay. The deity of Christ is that He is God in a human body. Jesus knows our struggles because He went through them himself (Hebrews 4:15). Another thing to consider is that the same word is used to describe Jesus and the Father in the Greek manuscripts (kurios, meaning Lord). FYI, many times the NWT masks this situation by inserting "Jehovah" where they want it to mean the Father. Using the same word can't be accidental when the writers were devout Jews; it would be blasphemy if Jesus were merely a lesser god. Which brings up another strange twist of WT doctrine: it's actually polytheistic (the real God and the fake god, Jesus who the apostles served even unto death). Contradictions aplenty.
That's just a short summary; much ink has been spilled on this subject.