One of our members, Charloadams, has made hundreds of great ones. She is really helpful, I am sure if you PM'd her she would help. A lot of people use windows movie maker or one true media, they are simple and the latter is free and online.
Click on import media, and then on the media you want to import (songs, videos, etc.. videos I think can be either .avi or .wmv, songs .mp3 or .wma).
It will appear in the folder called Imported Media. Click on that so you can see a little picture of whatever you imported. Then you would click on that picture and keep holding the click before moving the mouse into the timeline at the bottom. Then click the little plus sign next to video and a Audio line will appear. You can mute the video by right clicking on the Audio part of the video and selecting mute. You would add music the same way, except you would drag it into the Audio/Music section.
To edit clips, hover over the start of them and a little red arrow will appear. Click, hold and pull along until you get to the bit of the clip you want to appear. Then let go, and go to the end and do the same thing backwards
You have to convert it to a video file i think...at the top while your on the movie maker i think you click file and convert it to a video file...right now my movie maker doesnt work so i cant tell you exact...