"First Light" - by Geoff Wellum.
He makes a cracking good job of telling how it was really done. I think he had a total of 154 hours on Tiger Moths and Harvards before arriving on the squadron (aged 18 yrs 9 mths) with zero hours on Spitfire or any other aircraft. Flying is one thing, but the RAF did expect their fighter pilots to be able to navigate back to base once they'd finished shooting down Jerries.
They didn't expect him to fly in combat until he'd mastered the machine though - and they didn't have any two-seaters at the time either.
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Through difficulties to the cinema