I don't think we can learn much from how an engine learns, but we certainly can learn from its results.

For example, there's this interesting discussion: https://www.reddit.com/r/chess/comments/7ibzq4/stockfish_vs_...

Because Alphazero did not learn from human games, it looks at the different pieces without attaching values like we do. It has no problems sacrificing a higher "valued" piece for the sake of its strategy.