You can find a big list of good comparisons here.
The fact that I have been conversing with a Jehovah’s Witness for the last seven years should give you an indication that I could spend all night giving you an answer to your question. Use the references given in the other posts but you can start with John 1 verse 1. The NWT reduces Jesus to “a god”. The NWT also changes the interpretation of the word for worship to obeisance whenever it pertains to Jesus to deny His divinity. The list goes on and on, In Colossians 1: 15-20 the NWT inserts [in brackets] the word [other] to “clarify” that Jesus did not create Himself. See how this reads without that disgraceful insertion.
Thanks for the good start. You know, most of my family and extended family are still JW’s. Once or twice a year whats left of the family (the ones that are not DF’ed) get together for a meal. For the most part, I’m left alone to read the book I brought, but once in awhile I just can’t help but put a jab or two in. (The sad thing though is that even though two of my inlaws are Elders, my jabs seem to go by without notice.) Over the years, a few of them have been…“At least we all stayed alive 'till 75.” …“What is the thinking on the men of Sodom THIS year?” … “You’re not going to eat that piece of FATTY steak are you?” … “I hear the UN has a GREAT library.” … “Please don’t question my beliefs, and I won’t pick out the flaws in yours.” BTW, I almost stepped on it with this last one. My Elder Brother-In-Law comes up to me and says…“are you saying that the things you have been taught from infancy have flaws?” I just smiled and kept my mouth shut. After all, at the time I had no desire to be DF’ed, and answering with a yes would have been all he needed to pull me into a Judicial Commitee…to disfellowship me.Welcome home. Now that you are on the outside looking in maybe you can find a way to utilize your experience with the JW’s to those who are considering becoming one. I have many watchtower magazines, awake magazines, books and three sizes of the NWT. I’ve listened in (by phone) on several meetings. I’ve visited the books of Daniel and Revelation with my friend more times than I can count! Hang in there and keep researching the Church that Jesus Christ founded.
The Gospel of St. John 1. Especially John 1:1.