I realize that commenting here in favor of the Trinity is like stepping up voluntarily in front of a firing squad, but I will anyway. I struggled for about two years to understand the Trinity as the bible presents it. It didn't take long for me to realize that the concept I had growing up in church was not biblical. Hence the struggle. I have now come to an understanding that I am very comfortable with that fits very well scripturally. I put all of my notes into a six-session study and am happy to share it privately. Please PM me if interested.
The Trinity is a biblical concept, although it is very misunderstood by most proclaimed Trinitarians. It is even more misunderstood by JW's as they teach that the Trinity is the same as modalism. Let's face it, it is a difficult topic, and few churches spend any time at all delving into it. I personally believe that a person does not need to believe the Trinity in order to have salvation. I do believe that better understanding the concept of the Trinity helps with better understanding many other Christian concepts.