Dad: Son, let's study together
Son: Sure, Dad! Let's start in Genesis chapter 1
Dad: Well, I was thinking of studying [insert current WT study book here]
Son: But, Dad - that's studying [that] book, not the Bible. Let's read and study the Bible. We can use [that] book for reference, along with other reference material. This way we're really studying the Bible. This should be fun! [hold the sarcasm down as much as possible]
And then prepare for destroying the WT creation doctrine. If you can't get out of the first chapter of Genesis, you'll never have to worry about studying the seven times, or generations, or Jesus, or great crowd, or other sheep, or Armageddon