Best way to learn as an entrepeuer

Education is important and we have to keep on our toes as to what we are learning and putting into our minds. Because: the more we learn, the more we earn.But what kind of education is the best for entrepreneurs? Essentially, the more actively we learn something, the more we retain.Look at Edgar Dale's cone of learning and you'll see that the more actively we learn something, the more of it we retain over the long run.Reading is probably the most scale able and cheapest way to learn new things, but does not offer a very high retention rate, meaning: we cannot remember all of it 2 weeks later.  However, you can get books on almost every subject in the world, thus making it the most accessible form of learning.On the other end of the spectrum is doing the work. When you are working with a mentor or actually working on your business, then you are learning the most. The problem with this is that making a mistake can be very costly, because when it happens it can affect your entire business and livelihood. Whereas if you were to read about someone's mistake in a book, then you'd not experience the hardship, but only learn the lesson.As entrepreneurs, we need a balance of ways of learning new things: we need to be reading a book, whilst learning on the job of building our businesses. We need to be life long learning machines, because there is always something else we do not know.Constantly take in more information and from different sources. You, and I, can never know too much. Check out my book, detailing the mistakes and lessons that I have made whilst I was an entrepreneur:101 Entrepreneur Mistakes and Lessons.