One of the easier ways to get started making your own video lessons is found within a tool that some of us have been using for decades. That tool is PowerPoint.
http://www.freetech4teachers.com/2018/05/create-video-lesson-completely-in.html
DawsonITE is a blog devoted to Educational Technology. It's compiled by Rafael Scapin, Coordinator of Educational Technology at Dawson College in Montreal (Canada).