Getting your music on youtube is easy. If you can get your tracks uploaded on this site then you can have them up on youtube as well in videos and its free!
Download Windows Movie Maker software for your computer type and learn the program. Its really simple and has many help features to get you started.
Next if you want to internet download videos I suggest getting a youtube downloader free on download.com
I use it and it works great getting any video you want downloaded on your computer. You might have to get a avi to flv converter as well to convert some videos:
With these tools you can be making videos on youtube in no time and best of all its free! If you have any questions feel free to ask anytime.