> But at the start, there is no substitute. And the start lasts longer than you may think. Don't worry, he explicitly says this at the top. > Don’t get me wro

> But at the start, there is no substitute. And the start lasts longer than you may think. Don't worry, he explicitly says this at the top. > Don’t get me wrong, I love MOOCs. They’re great for trying to learn a new programming language (e.g., Python, Scala) or framework (e.g., Spark, TensorFlow) or subject (e.g., statistics, machine learning). The structured learning environment, excellent teaching, and exercises (and solutions) guide us through the best way to learn new concepts. > >But most of the time, we don’t really need it. If we already know machine learning, taking that shiny new MOOC won’t help with applying it more effectively.