I've been reading about new and rapid skill acquisition for some time now. I first came across James Altucher who spoke about Malcolm Gladwell's Outliers. This book goes into the 10,000 hour rule, which is great if you want to become world-class at a particular domain.
Josh Kaufman's book The First 20 Hours talks about the the learning curve and his experiments, but there is less substance to his message, but helpful if you want to see new learning in practice.

Scott H Young takes this much further in his book: Ultralearning. This is by far the most actionable of any book on the subject of self-education and rapid skill acquisition .

As Alvin Toffler reminds us: "The illiterate of the twenty-first century will not be those who cannot read and write, but those who cannot learn, unlearn, and relearn.”

Stay curious my friends!