sometimes the best place to start is to just mess around with it.
I'm not saying i'm good at creating videos, but as time has gone on, I've become more confident in doing it.
To begin with, I would just shoot the footage, take it back to the computer and start chopping it down into the good bits. A good thing to try would be get your footage and edit it to the music ... so splitting the scenes to stages and beats of the music.
Then from there, you'll learn what shots look good, and you'll even start planning shots or trying to get shots to look a certain way before you even take them.
One thing i'll say though is that if your filming a group, you knacker yourself cause you charge ahead, stop, setup, film, packup, catchup, charge ahead, stop, setup, film, etc etc etc .
Typically, unless your filming a complete descent or something, then i've found that an hours footage typically churns down into about 6 t0 10 mins of footage. you do get a lot of wastage.
but most of all, I would get our there and mess about with it, and dont worry about trying to be making the next best dvd there is, just enjoy it.