Essan, my experience was that "studying" with jws didn't help much. I kept asking questions, and they were honest enough to keep coming back and trying to research answers. But when they had to fall back on "don't know", it was always accompanied with something like "but I'll never let doubts about little things () keep me from Jehovah."
I guess if they are not ready to reconsider, no information will get through.
Is anyone doing something of helping the kids that are kicked out of homes for not wanting to be baptised and/or remain active? Like, helping them to find accomodation, work, higher education? Or even just mentoring and socialising?