I cannot recommend Syntorial enough. It builds up your knowledge of subtractive synthesis knob by knob, starting just with an oscillator and working up to the w

I cannot recommend Syntorial enough. It builds up your knowledge of subtractive synthesis knob by knob, starting just with an oscillator and working up to the whole shebang (filters, envelopes, modulation, legato, mono vs polyphonic, etc). For every single step, you're given a typical softsynth interface (with only the settings you've unlocked so far), given a short melody played with the target configuration, and you have to duplicate the configuration by ear from scratch (the intent is that this is the most direct way for you to learn to dial in sounds you hear in your head). You'll also be shown which knobs you got wrong when you make a mistake so you can intuitively see which settings you need to focus on better hearing. On top of all this, the license includes free add-ons for popular softsynths like Massive and Serum that go into specific detail about applying what you learn to those synths if you're interested in that. And there's a hands-on demo! https://www.syntorial.com/ https://www.syntorial.com/ It is pretty expensive, but the combination of brilliant hands-on implementation and sheer volume (no pun intended) of learning content warrants it IMO if you're invested in learning the topic. Also, not directly related to this, but they have a forum as well where people will share sounds they hear in popular songs and ask each other for tips on programming what they're hearing, which can be a neat resource as well, though I've personally not got as involved in that.