I teach at a Christian school, so I follow a lot of Christian organizations and people on YouTube. One particular group that has helped me a lot has been The Bible Project.
https://www.youtube.com/user/jointhebibleprojectThey have brief, easy to understand videos that introduce books of the Bible that I have used in my classroom and for my small group.
John Spencer is another YouTuber that posts some great, innovative content. I came across him via Twitter and have enjoyed his videos.
https://www.youtube.com/channel/UCRmWJULBr4CIP5xUucVgOvw