Hi there

Are you capturing a live "talking head" video, recording a slide presentation, or doing a screencast? What equipment and software, if any, do you already have?

There is some general guidance at https://teach.udemy.com/course-creation/set-up-your-filming-studio/ , but if you tell us more I'm sure we'll have more specific recommendations to offer.

Personally I use Camtasia, but I've seen screencast-o-matic come highly recommended as well if you're looking for a more economical alternative.