So... I just started and I'm playing through the tutorials, and I'm really struggling to get enough height to hit Aerial balls. At the moment I'm pulling back to flip whilst jumping and
just about manage to hit the bottom half of the ball. Am I doing it wrong? Or is it just practice?
Well, the real answer is: you just started, ignore real aerials in gameplay for now. Missing one is very punishing, and the rule of thumb is basically that if you can't make the same angle on the ground, you can't make it in the air.
So really, just enjoy the game for now, learn the basics and more advanced shots, then try to learn some aerials :3
Yep. And I'd also recommend not to focus too much on the tutorials. Their usefulness has its limits, especially when you're new to the game. So much of the game is about reacting to and anticipating what your opponents are doing, keeping in mind all that could happen in any given situation, knowing when to take your chance or when to hang back, where to hit the ball, the possibilities and dangers of the wall....etc. All this and more can only be learned through match experience playing with/against other players. In the tutorials you're all by yourself, no opposing player in goal or going for the aerial at the same time as you (and possibly from a better position). Being able to theoretically land every aerial helps, of course, but only so much. Imagine a football player going for a header or a NFL receiver catching the egg: By himself he'll get it every time, having to fight another player for it simultaneously, though, is decidedly different.
So, just play the regular modes and get used to their dynamics. I firmly believe that's the best practice you're going to get. Chances are high you'll be matchmade with players of similiar experience or skill, you will find success and you will fail but that goes for all skill levels of Rocket League as player's ambitions & expectations keep rising. But in case you feel you're too detrimental to your own team or want to practice more advanced stuff, maybe try out 4v4. It's chaotic as fuck but you have three other players trying to correct any mistake you might make. Playing against bots is an option as well, but only for the ground play, I'd say. "Air game" doesn't really seem to be part of their vocabulary.
Hold x to jump higher, and if you need to aim yourself up and use boost to fly higher, then do a flip by tapping x and holding the left analogy stick in the direction you want to go ( you have like 2-3 seconds to do a flip)
The window for the "X-flip" following the initial jump is 1.5 seconds long, to be precise. It's not always the best option, though. Sometimes you want to have a lighter touch on the ball, for example when setting up teammates or lobbing the ball over opponents.