And Deathbunny brings up a good point: the sim doesn't teach you a thing about starting and tuning an engine. I'm a mechanical guy, and thought after reading all the instructions and posts about starting and tuning engines it would be a breeze. Well, it wasn't! It was hard to get started, and when it did (and ROARED at me) it was much harder to tune than I had expected. Sure enough, the next day a guy at the field had it started and tuned in a minute, and showed me what I was doing wrong.

Also what he said about people: yesterday someone said something to me, and I looked at them, and got snapped at! Never look away from your plane, and don't even look at the trims when you're flying! Sim didn't teach me this.

Last thing, good practice is to fly on the opposite side of the landing strip, never fly over your head or the pit. Take off, turn away from you, and circle around flying over the strip or just across the strip from you. Sim didn't teach me that, either.