I want to make a video edit, then move the orange marker to the spot I changed, press play, and watch the portion I just edited. But instead when I press play it jumps back to beginning of the video. What am I missing since this seems like it should be a pretty rudimentary function?
it is most likely that your project has been damaged due to unknown reasons. This problem can be easily solved: Simply click on the "FIT"-button which can be found at the lower right part of the program window (button symbol: two arrows that lead away from one another). Now the playback and the orange marker should work fine again.