Trying to fog a mirror with Avidemux

[eager]

I'm a scriptwriter who is trying to learn film/video editing to serve my writing. I may be writing and producing online content but I have no training or experience shooting or editing film/video.

I will probably just be using a $200-300 camcorder at least until I can afford more.

I'm using XP Pro and I'm interested in free video editing software so I can become conversant in video editing jargon and techniques.

I was hoping there was a video editing software which was the equivalent of Audacity which is both free, very easy to use and learn and has a very helpful support forum.

Are there Avidemux free video tutorials?

Thank you very much for your help.