In COC, Ray Franz stated that, when he was a member of the Writing Department, he found older Bible commentaries quite helpful to use for research. Now you can locate these types of commentators, such as Adam Clarke, Albert Barnes, and Matthew Henry online. Check out http://studylight.org/com/ and http://bible.crosswalk.com/Commentaries .
The advantage of these commentaries is that the writers believed the Bible to be the inspired word of God. They would harmonize apparent contradictions rather than presenting them in such a way as to invalidate the Bible. Some who ask Biblical questions simply don't want to be shown that another part of the Bible may say something quite different, or that some Biblical event or person wasn't historical, or that certain Biblical teachings may be traced back to nonbiblical or even pagan sources. Well, now you don't have to be exposed to such a "critical" approach.
In using the commentaries, remember that your questions must be based on specific Bible verses. Also, remember that such commentaries may not be helpful for doctrine, as the Society has had over a hundred years to develop its arguments against "Christendom." Questions must be regarding the meaning of scripture passages in general.