I can scribble out identifying info (text, landmarks, faces) in an image, but I've heard images can have some geographic data. How do I remove that?

And video is a whole separate challenge - I don't know how to edit video. Does video have other metadata like my location or stuff about my device? What's some software good for beginners? How do you remove excess metadata with it?

Are there other considerations I should have?

(If there are step-by-step resources out there, please feel free to just link me to them.)

Thanks in advance!