A lot of photographers shoot auto white balance 99% of the time, but if you would like to dive into setting a custom white balance pal2tech has an accessible tutorial for you. White balance is most critical for JPEG and video shooters, but even if you’re shooting RAW it is best to nail white balance in the camera than to adjust it after the fact. For maximum color accuracy, you should have a Calibrate ColorChecker Passport Photo 2 and a screen calibration tool like an X-Rite screen calibrator.