@BlinkRape @beardalaxy
I also didn't want to write, that the lesson of tuning a guitar should be trivial these days, and my dad made sure my guitar is fine, but ok... Since I have to spell it out. 
Why did I even ask on fedi... -_-
@LukeAlmighty @BlinkRape alright don't take my advice, the guy who literally makes most of his money by playing music 
@beardalaxy
Sorry, I didn't want to be rude. Of course, I have watched some videos on how to tune a guitar. But my issue with the advice was, that the 2 parts of "learning how to hold your hands" and "learning how to play tabs"... I don't think I get what you mean by them. Tabs is in theory the easiest system to read, and same goes for the holding. But what kind of exercise is the best to get from "a kid making random sounds" to making the sounds that I want to make?
@LukeAlmighty maybe scales. look up something like "guitar scales for beginners." learning tabs will be the same, just looking up a video like "guitar tabs for beginners." i recommend knowing tuning and the names of all the strings first because you're going to need that foundation if you want to be able to read and play tabs.
after you get used to playing some simple melodies (i started with video game music like mario sunshine and final fantasy) then you can try learning some chord formations and looking up chords for songs. however, that's when you'll need to know strumming patterns which requires a good sense of rhythm, so before playing chords you'll want to maybe look up some videos on how to practice rhythm and strumming patterns on a guitar. it can be as simple as just not fretting any of the strings and playing an open chord, which won't sound very great but that shouldn't be your focus. you want to get the rhythm and the way your hand moves down.
when you hold a guitar you want the pad of your thumb pressed up against the back of the neck. that makes it easier for your fingers to travel around the fretboard. i don't do this and it's a bad habit of mine because it means i have to change my hand position on the neck for some chord structures (i have my thumb wrapped over the top of the neck most of the time). it's really good to practice with proper form even if it feels weird or unnatural at first. the same goes for holding a pick, you can look up how you're supposed to hold one for the best results. i actually don't use a pick because i play ukulele for the most part and you're not supposed to use one, you just use your finger nail, so i'm more used to that (and my finger nail is always broken because of that lol).
don't expect it to go fast, it takes a long time to learn and requires a combination of a lot of skills, muscle training, and committing things to memory. but anyone can do it if they stick with it. it's probably gonna' hurt your fingers for a little bit, especially if you're not practicing with nylon strings but even then you're gonna' get calluses over time to resist the pain. my finger tips on my left hand are slightly deformed because of it and i've got a big callus on my middle finger from bar chords xD