These are mainly why-I-left-the-church videos, since becoming bna'i Noach is a realization you already are bna'i Noach.

A few links to some testimonies I found helpful. These will be valid for Noachides as well, since the experiences from the standpoint of leaving the Church will be very similar.

• Converting to Judaism (May 4, 2015)
• Out of Christianity to Torah Judaism, a Pastors Journey (Nov 19, 2014)
• From Christian Pastor To Jewish Rabbi – Conversion to Judaism (Mar 20, 2013)
• Former Christian explains why he converted to Judaism Part 1 (Jan 24, 2015)
• Christian youth pastor converts to Orthodox Judaism (Nov 16, 2015)
• A Ministers Journey to Judaism - Conversion to Judaism (Mar 19, 2012)
• African Becomes Orthodox Rabbi - Conversion to Judaism (Jan 24, 2013)
• From japanese Christian to orthodox Jewish Rabbi - Conversion to Judaism (Dec 26, 2011)
• Africans convert to Judaism - Conversion to Judaism (Mar 29, 2015)
• TESTIMONY TUESDAY - Ex-Pastor & Ex-Messianic Rabbi (Aug 15, 2017)
• From Indian Goy to Orthodox Jew - Conversion to Judaism (Apr 28, 2012)

• * Why I left Christianity and converted to messianic judaism (Feb 22, 2015)