You mean the shutter and ISO. There's no mention you can change the aperture.
A mic and a recorder are of course an absolute necessity if you plan on recording sound, but generally are not needed on music videos as your having the artist(s) perform on-camera to the track. A good playback/ sound system is very important and shouldn't be overlooked.
It's a tad outdated as it was written close to 20 years ago,but " You Stand There: Making Music Videos" is still the best book written on making them. Of course both watching music videos( and if they have any) making-of promos will give you insight as well.
Music videos as a whole, are sort of "dark art" as there's really no rules to apply to them except for one: the imagery must work with the song.
Learn as much as you can about stills photography. After that, pick up the latest ASC manual and Harry C. Box's The Gaffer's Handbook. All three should give you a good idea on the foundations of cinematography and enough insight to try filming.
Yeah right, only if you're in a union and good luck getting into one of those. Everything else will be low-to-no pay.
This documentary is shot and edited like a music video. Big deal.