Welcome to the forum.
I read CoC. I was so nervous to buy it I had a friend drive to another state and buy it for me. I was so so nervous that someone would find out I bought it and read it.
That book helps clarify things that many people already sort of have a feeling aren't right. It helped me by putting specific thoughtful arguments together for specific Witness doctrines. Other books are great but they don't take the time to go into the detail that Ray does.
I wish you well on your journey.