Congratulations Leftbehind
Like others have said seeing the truth about the 'Truth' can send your mind in a spin. It can be a tough journey but it is extremely liberating on a personal and intellectual level. It can be tempting to tell everything you have found out straight away to your family and friends but that can often make them overly defensive. Sometimes the softly, softly approach is best especially if your not ready to be DF'd. It's good you have your brother to discuss things with because I know for myself and other people on the board who are the only family members out of the org this board is one of the only outlets to talk about things.
I would encourage your further research into the Old Testament and New Testament scriptures. There's some very interesting and eye-opening information to be found about the historicity and origins of Hebrew and later Christian beliefs.