Hey all, check out this video on ISO, aperture, and shutter speed. The video is actually for digital photography as opposed to video but the principles are largely the same. We all have different cameras but each one should at least have ISO controls. Look in the manual and figure out how to master these. Doing so will increase or decrease your camera’s sensitivity to light and, therefore, radically change the quality of your image.
If this is too much for you to think about right now, don’t worry. You can always re-shoot later / tweak your image in Final Cut.