This document provides guidance on choosing microphones, properly recording audio, monitoring audio in the field, and mixing final audio. It discusses lavalier microphones, handheld microphones, and onboard microphones, and notes advantages and disadvantages of each. For recording, it recommends testing audio levels by speaking in sentences at a distance of 6 inches from the microphone. When monitoring in the field, it suggests ensuring audio levels are between -6 and -12 db. Final audio mixing goals include ensuring dialog is audible without being too loud and changing volumes to match field recordings.