There is an interesting article from Kdnuggets, showing how to understand the Deep Learning.

(Source: https://www.kdnuggets.com/2016/01/seven-steps-deep-learning.html)

One interesting article from Kdnuggets, talking about Deep Learning for image classification using Keras.

(Source: https://www.kdnuggets.com/2017/08/first-steps-learning-deep-learning-image-classification-keras.html)