Broken hearted,
JWs do not know the bible and history at all. All they know is the WTs version of the bible and history. You have to read the bible in its context to really understand it. And one thing I have learned that I did wrong in the beginning with the Witnesses is that I did not check any facts from sources OUTSIDE the organization. They will only give you their books which are biased to prove their version of events. Something else my husband found out after we left is that whenever they re-issue a new CD ROMM for the computer (WT library on CD), they delete many of the past WT and Awake articles because they have changed doctrines many times. For some years, whole months of articles are missing. They then revise their history in the Proclaimers Book to show something different.
Please remember that as far as teaching others, their material is biased and they practice all the time so it does seem like they know what they are talking about. But, if you take any scripture they give and read the whole chapter, you will see that it was written for a specific reason and audience and that the JWs are twisting it to mean something else. Also they have changed over 200 verses in their bible in the NT. The NWT is totally biased and was only written because no other bible backs up the JW teachings.
I cannot stress enough that you have to check everything. Do not study any books with them. Read the New Testament on its own and you will get a good basic understanding of early Christianity. While they may teach some things that are true, you will find the same in all religions. But in the WT you will be totally enslaved to it. You have to report time cards to elders telling them what you are doing in the Ministry right down to how many hours, magazines given out, and bible studies you have. You will also have more laws prohibiting what you can do, than the Jews had in the Mosaic Law. Ask them to tell you what you will not be able to celebrate anymore and see if they are honest. Please be careful. I will be praying for you.