be sure to read the thread you can find many info and tutorials in it. other tip i can give use google alot :D search for thing like ARMA2 editor ........... subject you need info about.
Small how to cinematics:
made my movies in the arma2 editor. to use the dayz models you have to start the editor through dayz. only in the newest versions of dayz they disabled it. you have to revert back to an older dayz version. revert back to 126.96.36.199 easily done with "dayz commander".