So to sort of “enhace” the fingerprinting of any audio file (music files being my focus of study), what concepts should I study as an amateur (sound engineer) so that I can understand how to bring clarity to dirty/noisy audio? For example, I came across another similar post where an engineer (I am guessing) provided simple recommendations to modify the characteristics of the audio file, which can be found here: EQ Recommendations
Should I start by simply playing around and understanding what each option does, or are there any resources that give a basic understanding of what levers to pull to enhance sound?