Second, it is a great opportunity for me to learn from a Jehovah's Witness what Jehovah's Witnesses believe. Articles and books are great, but discussing these issues with them gives you first hand experience in witnessing and assures that you understand what they believe directly from them.
Finally, this occasion provides you with an outstanding chance to share the true gospel of Jesus Christ and share with them why they are mistaken. Today's featured article from J. Warner Wallace is a great way to prepare for those types of opportunities.
You can check it out here.
Also, do you avoid discussions with Mormons and Jehovah's Witnesses because you don't know what to say? If so, I encourage you to read this article from Stand to Reason's Alan Shlemon.
Courage and Godspeed,