Well, I'd recommend flying as much as possible (if not always) the Spitfires Mk V and IX for a while (i.e. maybe a month I guess). The Mk V turns better, whilst I think the Mk IX is faster.
The reason for this is that if you fly a really really really good plane like the ones you were asking about, they're essentially
so good that it's very easy to develop 'bad habits' with them, because they're just so good that you can still make mistakes and be successful (thus causing you to repeat the mistakes etc). However, a not-so-good plane forces you to do things 'correctly' (whatever correctly is
) and thus helps you to become a better pilot.
If you need any help with very basic stuff, such as take-offs, successful landings, understanding sort of how the online game works, please PM me on these forums, or PM me in-game if you see me (McWatt) online. I'll be happy to help.
Also, I'm going to try and compile a list of all the websites that I've found with helpful information about the game, and post that on here, but it may take a few days. Also, try and find a Trainer, who'll be an excellent help to you.
Have fun & <S>
Yossarian