Let me begin by saying I am a complete non-techie. I recently updated to the latest version of Imovies. It appears I need to "update" my existing movies. I have no idea how to do this (some of my movies are on an external drive) and every explanation I have read online assumes more technical knowledge than I have. Any guidance appreciated. More generally, I find the entire Imovies package to be way too complex for me to deal with. Any advice re really really clear tutorials that do not assume any technical expertise beyond the very basic stuff - accessing folders, copying files, etc. would be greatly appreciated.