SoundGym
One of the fundamental things that taught me how to properly identify frequencies was ear training. I was taught using a system called Golden Ears by Dave Moulton. That system is no longer available, so I scoured the net to find something similar to help you all out. Do the course. I promise you will be better by the end of it. Impress your friends by saying ” Add a little more 100hz on the Kick”
SoundGym Ear Training Program