Aerodynamics (fun fact senior year I'll be taking a physics class, so excited), how to make working prototypes for idea that I have, how CoM, CoT, and CoL in relationship with one another on a plane effects how well or bad an aircraft will fly, and all of that fun stuff. It has also opened my mind to my passion for aviation, I love planes, and I love learning new things about them.

Everything

• Various bits about how planes work and some expected behaviors
• Programming (both modding and FT) including signs of a memory leak
• How to physics
• Can recite numbers of 1 / 2n, for n is an integer and n > 0, down to 0.0078125
• Ways to get over art block

Well, a couple of things:
1) The Floor is made of Floor
2) Pentagon is susceptible to Funky Trees
...
Okay.
The game itself is an sandbox indeed so go amuse yourself with given instruments.
Cool? Seem to be.
We have to build a things that may fly, glide, swim, crawl, ride on and off roads and so on.We are trying to achieve a specific performance for our builds, through errors and basic problems.We learn how everything works and gain useful skills to create what we want here.
Cool? Seem to be.
We even have programming of sorts, so-called Funky Trees,and you can learn some math with them,aside from basic physics.
*Rhetorical-Question?Rhetorical-Answer.*
There is also a place to share and look on what others build, this website. And it is many people here.You can see something new every minute (if not less) in newest tab. You can socialize...
Cool? Yeah.
Also, there is a moment at 8000 RPM when you realize that points are pointless

You don't get bored of some things

I can detail the following

• Information about things I've built and how they work, the learning of which spurred by an interest in replicating such functions (i.e. Submarine Ballast, Hydroplanes, Mcpherson and Semi Trailing Arm Suspension)

• People here like builds that are 'out there' and unusual in their approach and results. Meme builds are a notable example, though the moderate to high popularity of many of my submarines show this as well given how they push what can be made functional (i.e. free diving submarines, submerged launched ballistic missiles).

• NEVER. EVER. Do a collab with people of lesser skill than you, or else they might get greedy and try to leech points off your work. There's being generous, and then there's being exploited.

• Don't do requests, while it's good to keep suggestions in mind, commiting to making something because people asked you too can similarly make you a target for greedy people.

• The Keys to success on here are Patience and Persistence, patience to build and learn how to build better and Persistence in continuing to build. Unless you're truly bad at this game you will get somewhere in time. Just look at the early builds of people like me and Juanfly.