I would point him to qanon.pub and let him start reading Q posts from the bottom (the beginning) and let him make up his own mind over time.
Could also have him look at these-
https://www.qproofs.com
https://youtu.be/3vw9N96E-aQ
https://8ch.net/qproofs/res/49.html#49
https://8ch.net/qresearch/res/3082784.html
Baker, related note - this link is broken in the dough: "Q: The Basics - An Introduction to Q and the Great Awakening"