I have just recently become interested in quantum mechanics after having a series of conversations with my friend who is a chemistry buff. My background is mostly in philosophy, so my initial interest in quantum mechanics stems from its philosophical implications which are staggering to say the least. Unfortunately I haven't had much of a propensity for science in the past so I'm having to familiarize myself with very basic concepts. A part of me thinks it is rather futile to pursue a study of something so opaque considering I have very little foundational knowledge to begin with, but I'd really like to understand quantum mechanics enough to interrogate and strengthen my own ideas about philosophy. That being said, would anyone condescend to answer some questions I have? 1) What exactly is the correlation between line spectra and electron orbitals? 2) What is the simplest way to depict the wave function? 3) What exactly is Planck's constant? 4) What does it mean for something to be quantized? How is electromagnetic energy quantized? Thank you.