You can edit videos in Windows Movie Maker. Movie Maker allows you to make videos. What you will want to do first is open pictures or a video that you will want to use. Select however many images or videos you want to use. Create a title and credits for this video. You can select whatever type of font and font color that you want to use. The next step you will want to do is add Audio. You can do this by looking under Tasks on the far left side of the page and add whatever audio from your hard drive that you want to use. You will see on the bottom portion of the Movie Maker screen, a bar where you can drag images and audio at whatever point in time of the video that you want to place it at.