I also have my two cents worth (newbie with 5 days experience):
I already posted that the initial experience is a bit overwhelming and that I sometimes need to ask (to experienced players) obvious things. But I read the manual and flew off-line for a while. No real surprises there, flew a lot in off-line sims before.
In the training area no-one seems te be around when I'm on-line, so I jumped right into the deep end, the main arena. The learning curve is steep, but in 5 days I learned more about modelling, gunnery and tactics, a.k.a the 'feel' of the game then I ever thought possible. Point is, if you have some flight sim experience, use the squidgy grey organic computer and have some patience and peristence, it all seems to work out, at least for me. Sure, I get killed a lot, but the fun factor is fantastic.
If you have five years experience on-line instead of 5 days, sure, you're waaaaaay better than me. But if you make some stupid mistake, like using a P-51 low and slow for field defense against my FM2, you will die.