The Revelation book was being studied when I started to wake up.
The amendments really confused me and I resented being advised to print study material direct from jw.org as we were unable to get "revised" books where we lived.
I didn't have any ink at that time (I had to wait for some to come from UK) and continued to use the old version. I understood statistics being revised and updated but other stuff made me think.
A dangerous thing for any witless to do!