TensorFlow, Keras and deep learning, without a PhD
In this codelab, you will learn how to build and train a neural network that recognises handwritten digits. Along the way, as you enhance your neural network to achieve 99% accuracy, you will also discover the tools of the trade that deep learning professionals use to train their models efficiently.
https://codelabs.developers.google.com/codelabs/cloud-tensorflow-mnist/#0