It would be great to have a tutorial about what to listen for when you choose a sound, or when you’re mixing. So not what all the knobs are doing, but when to know if it sounds right. What do you wanna hear in a kick drum for various styles, how does good reverb sound, how to use your ears to do eq and compression etc. And what’s good levels in your mix, panning etc.br
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I find many tutorials on how to do it, but no so much on what a good sound is. 
I hate to say it but that kind of thing would be pretty darn hard. Actually knowing when a sound is ‘right’ is completely subjective and changes with every person. I’ve collaborated with a fair few producers and agreeing on what sounds ‘right’ can take a while!br
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Ear-training takes time, a lot of it. It’s a case of making lots of music, listening to it back in many different environments and tweaking. Over time you do learn how to do it quicker and you’ll find it faster getting that sound you’re looking for but only you’ll know that because it’s in your head. br
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It also heavily depends on what you’re trying to create. If it’s something you’ve never tried before or you are early into your career and crafting your own sound then it will take a great deal of time, if you find it at all! However, over time as you develop your sound you begin to learn what to look for and without just simply re-calling previous presets, you’ll just instinctually know what you need to do to make that sound.br
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It’s all about trial and error!
It would probably not be an easy one but even if it’s subjective doesn’t mean it can’t be teached. I think you can learn a lot of producers showing how they use their ears, what they listen for, and what they think sounds good or not good.