I am having problems with the following things. I record my audio (which is me speaking,) and the video. But I can't figure out how to make it so when the video plays I can hear my audio at the same time, as the video plays. I can't figure out how to trim the video and get rid of unwanted parts.
To import the audio file, click on "audio or music" under the import column. Then drag the file onto the timeline audio/music, you can slide the bar along and have the audio start at any time during the video. You can also shorten it too.
To trim a video file, drag it to the video timeline at the bottom, and adjust it as if you were adjusting an open window (your firefox window for exemple.)