Depends on what the 'newbie' wants to learn.
For general purposes in combat, like many people have already recommended the Spitfire MkIX is probably the best of the best. It's merely a '42 plane and yet, for pure combat purposes probably the best balanced of them all.
The great advantage this plane holds for the newbie, is that it allows the neophyte to have fun and win, at the same time as learning to fly. The balance of speed, climb, acceleration and turning capabilities are almost perfect. It's just a damn good plane.
The relatively weaker armament compared to the N1K2, also holds benevolent for encouraging better gunnery - while the 2x Hispanos are better than all four of the N1K2 cannons at longer ranges, in closer ranges it is definately weaker and works the pilot to beef up his gunnery if he wants kills.
The drawback, is like others have stated, it's such a good plane that once one becomes potent in it, he really doesn't need to fly something else - at least in the typical MA environment. Just keep track of minimal SA and don't fight where you will be outnumbered quickly.
Also, another drawback, is that since it's such a potent pure dogfighting machine, other people will also use them. The relative advantage this plane holds is almost all neutralized in the MA. It does offer the benign situation of having to learn to fight against the same type of planes - but it's gonna be boring.
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For the bit more advanced pilots seeking to increase SA and basic ACM, the Fw190A-5 is perfect. Its operational philosophy as a A2A fighter is totally different from the Spit9, and more often than not you will find planes that both outrun and outturn you. This plane helps you learn to utilize rolls and high speeds to your advantage.
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For learning advanced techniques of "E-fighting" in the non-BnZ sense, then the Bf109 is the adequate textbook.