Here is how I do the post processing. First, I keep it simple and use Windows Live Movie Maker. Its easy and free. One thing to keep in mind is that the video will not look quite perfect until its finally rendered and saved for DVD. Ok, so lets start.
1. import the clips you want to use. Once they are all imported, arrange them the way you want. You can play each clip to see whether you want to keep it, delete it, or rearrange it.
2. once the clips are in the order you want, click on "animations." I keep it simple and use as blur/fade transition and use it on all of the clips. You can get more creative once you get the hang of using the software. You can adjust the duration of the transitions, too.
3. here is a nice addition to add. look in your clips for some moving action. then, place your cursor on the first frame, the click on edit under video tools at the top of the screen. under "speed", click on the diamond and then click on 0.5. that will give you some slow motion. its fun to play with this speed adjustment going either way, fast or slow.
Once you have all your clips arranged and with the transitions, animations and effects, click on title, and add a title and credits. You may have to rearrange the title and credits as they don't always land where you want.
4. Play the whole video to see if you like it. If so, great, and if not, edit some more. Once its done, its time to add music.
5. click on "home" and then place your cursor at the beginning of your video. click on "add music." find some music you like and insert it. Once the music is added, click on "options" under music tools at the top of the screen. Music tools will not be there until you add music. in options, adjust the various options and then click on "project" to adjust the audio mix between your video audio and the added music/audio.
6. play everything back and once you are satisfied, I save by clicking on the far left, and then I save it again by clicking on the far right under "save movie" and I always save at the highes setting, which is "for high def". you can always save another copy at a lower rating later.
that about covers it. good luck.