I quite enjoyed reading this, mainly for knowing more about John Bogle, his history, and life philosophy overall.
I felt that it was focused more on entrepreneurs and especially ones based in USA.
William Bernstein's "If You Can", provides concrete advice and steps to follow for a financial education and planning your retirement. (Albeit again, using USA-based investors as an example).
Overall, it was worth reading, but, funnily enough, I somehow felt that this book wasn't enough.