I should not waste my time researching the scriptures as it would only confuse me
My experience was that the JWs read and used their Bibles often. The whole thing that really impressed me at first was that everything I heard from them came right out of the Bible. I just didn't realize how twisted their logic was when it came to interpretating certain scriptures to support such deluded practices as disfellowshipping, not celebrating the holidays, not saluting the flag, not being involved in extracurricular activities, not getting a college education, and on and on... I also didn't realize they put the teachings in the publications before the teachings in the Bible (such as is done with the Book of Mormon IMHO). I say this because if you question the correctness of what is said by the Society in the publications you are considered an apostate/a dog returning to its vomit -- give me a break!
When I studied with the JWs my parents had a pastor come talk to me and he tried in vain to prove that the Trinity doctrine was Bible based. Each time he turned to a scripture I would say, "lets read the whole chapter" and there would usually be scriptures, which put the matter in context and disproved (in my opinion) what he was saying. I would then direct him to a scripture further explaining my belief and his immediate response would not be to discuss what I had just shown him but to turn to another scripture somewhere else like that would make the point I just made go away or cancel out the scripture I just showed him or something. He got nowhere and commented to my parents as to how well I knew my Bible.
I think JWs use their Bibles and can quote scriptures all day long. They just always need to take it to another level (i.e. head chopped off at birthday celebrations; that must mean we can't celebrate birthdays - LOL). The whole problem is that they have been misled by a Society on steroids when it comes to quoting scriptures, elaborating on the interpretation, expounding on the meaning, understanding the deeper things, meditating on the solid food, etc. - blah blah blah. They use the scriptures as a means to an end or to support what is said in the literature rather than just letting the Bible speak for itself.
Sure they know their Bibles they just have severely distorted views when it comes to what's being said in those Bibles.