Freeware

Anime Music Videos dot org AMV Application
It includes many key codecs and pre/post processing programs for video editing. Notably, there is also a Guides section.

AVIsynth dot org
A spiffy post-processing program. Takes some getting used to, but if I can figure it out so can you!

Koepi dot org
Where I get my builds of the xvid codec. It has other media stuffs as well.

Neuron2 dot net
This site has many AVIsynth/VirtualDub filters. It’s a great resource as well. Check it out.

Virtual Dub dot org
I use this program for most of pre/post-processing on videos.

VLC Player
My media player of choice