Maybe this is where film school would come in handy?
Nope, not even close. The vast majority of film schools teach audio on a scale which ranges from poor to horrific. There are extremely few exceptions to this general rule!
Since I've joined here I keep hearing films are 50% sound. It's half the experience.
Okay so it's half of what I'm trying to learn. ... Does this make sense where I'm coming from? How do I educate myself?
Let me draw another analogy: As geeky as it may sound, since I was a teenager I've been fascinated by theoretical physics. After a while though I'd learned about as much as a layman can learn, which was very frustrating! I wanted to understand in more detail but there was no further I could go as a layman, the next step was dedicating my life to learning incredibly complex math, something I was unwilling (and possibly incapable) of doing. So I was at a dead end, there appeared to be no intermediate steps between where I was as an interested layman and studying full-time with an actual theoretical physicist.
What you are looking for is roughly the same and doesn't really exist. However, I think you're approaching the whole issue from the wrong direction! While there are certainly a few practical steps you can take with the physical audio recordings (in the roles of PSM and picture editor) to make my work in audio post easier/faster, there are other steps you can take which have nothing to do with physical audio recordings which are orders of magnitude more helpful in enabling me to do a good job!! Virtually all amateur filmmakers think of narrative film as storytelling through visuals and dialogue, period. For this reason they only think about what is required in audio post once the film is otherwise completed and in terms of; improving the comprehensibility of the dialogue and not distracting from the visuals by making them sonically unbelievable. "Better sound" is therefore cleaner/more natural sounding dialogue and more believable/less distracting soundscapes. However, we're essentially talking about better audio fidelity, which is or can be an important ingredient in "better sound" but
is not by itself better sound. It's like filming a short with two immobile actors sitting on a couch in a bare/bland sitting room with an iPhone on a fixed tripod. If we shoot the exact same scene again but with an Alexa and give the footage to a good colourist, would that be better cinematography? More importantly, would that be better storytelling or a better film? No, I would say that better image fidelity is just an ingredient and not by itself better cinematography. I would say that better cinematography starts with the script, with a more visually stimulating location, some physical movement, some poignant dialogue with momentary pauses. It continues with set/art design, interesting lighting/shadows and the possibility of different angles/POVs/shot depths, etc. All of which will allow the cinematographer opportunities to create intrigue, focus our attention, heighten the drama, imply things and actually participate in the storytelling, rather than just being the physical means by which the actors' performance is recorded. Exactly the same is true of sound!!
In other words, stop trying to learn the detailed techniques of how to improve your audio fidelity and comply with technical requirements. Unless you want to actually be an audio post professional it's a road to nowhere which will have little impact on the quality/watchability of your films. As a director or producer you absolutely have to know a bit about technical audio requirements, so you know what resources (personnel/facilities) you'll need and can design your film with them in mind but it's a waste of your time trying to actually learn to do it yourself. If you want "better sound" instead of trying to learn the specific physical processes of digital audio manipulation you would be far better served by learning a different filmmaking approach. Progress beyond the late 1920's view and approach of film being a visual medium with dialogue and try out the approach of the great modern filmmakers! Learn to think in terms not just of what your characters (and audience) see or learn from the dialogue but also what they hear. Think about the fact that your characters are not real human beings if they only perceive and respond to visual stimuli or dialogue and don't inhabit an aural world, then think about how you can use this fact to enhance your story telling! This article is a good place to start:
Designing a Film for Sound.
Although it might appear like I'm contradicting what I said above, I'm going to suggest you read "
Dialogue Editing for Motion Pictures: A Guide to the Invisible Art". Although it deals with the specific mechanics of one aspect of audio post, it's so well written and explains so eloquently how dialogue editing contributes to the art of motion picture storytelling that I consider it essential reading not only for aspiring audio post pros but essential also for directors, screenwriters, producers and pic editors.
... I'm attempting to make a short masterpiece for [higher tier] film festivals.
OK, this tells us what you're going to need (and not need). The good news is that you won't need any type of M&E mix, a time consuming and costly commercial requirement. You are going to need two audio mixes: A stereo mix, something along the lines of a stereo broadcast spec mix (for submission) and a theatrical 5.1 mix (for exhibition). That's not a big deal though, as a stereo mix for submission can easily/cheaply be derived by your audio post personnel from the 5.1 mix. So, as the Director or Producer this means you're going to need theatrical audio post facilities/personnel and of course referring to what I said above, to design your film for 5.1 sound. This is a little problematic as theatrical audio post personnel/facilities are extremely expensive, think of a week or more at say $300-400 per hour. There are of course ways to significantly reduce this cost by increasing your risk, say hiring a smaller cheaper 5.1 boutique/broadcast facility to do all the editing/design grunt work and then just mixing in a theatrical dub stage or at the very least checking the mix in a theatrical dub stage. It's also occasionally possible to get theatrical facilities/personnel at a massive discount, say during their down time for use essentially as a training project for their assistant/apprentice editors/mixers. But all this needs to be sorted out, organised and budgeted before you start making your short. That just leaves the talent and artistic vision required to design your film for 5.1 sound, which is maybe a topic for another post/thread?
G