ed,
here is a superlative source for video newbies. the forums are friendly, knowledgeable, and very helpful. also, poke around for the free apps and numerous tutorials.

http://www.videohelp.com/

editing video for youtube all with free software:

http://www.videohelp.com/guides/how-to-prepare-clips-from-a-dvd-to-upload-to-youtube-id1125#1125