Unbaptised, I haven't read all the posts here regarding your questions, However I must Commend you for taking the time to investigate the organisation you are studying with.
Many here, including myself, have grown up in the "Truth". We did NOT have the luxury of talking to people that could show you both sides of the coin so to speak.
For your sake, take note of what some have to say here on this forum, and ask as many questions as you possibly can from the person you study with, based on what you have been told here. Do NOT accept everything shown to you verbatim by your teacher. We were HIGHLY trained to talk to people that showed interest, so I'm sure your teacher is also well "qualified", to teach the organisations ideologies.
Before you commit yourself to anything, the Jehovah's Witness organisation has to offer question it! I would say the same thing to anyone looking into other religions.
The amasing thing that you'll find is, IF you ask too many of the right questions, your teacher will eventually brand you as NOT a sheeplike person but a Goat. Just wait and see!
If he asks where you come up with these questions and you say the Internet...he/she will say AHHHHH that's Satan trying to pull you away from the "Truth". The choice ultimately is yours. However there are SOME genuine people in here that will answer your questions honestly, and with evidence to support it.
Good luck on your search for Truth.