A friendly introduction to Deep Learning and Neural Networks

Announcement: New Book by Luis Serrano! Grokking Machine Learning. bit.ly/grokkingML

A friendly introduction to neural networks and deep learning.

This is a follow up to the Introduction to Machine Learning video.
https://www.youtube.com/watch?v=IpGxLWOIZy4

Note: In this tutorial I use natural logarithms. If you used logarithms base 10, you may get different answers that I got, although at the end it doesn't matter, since using a different base for the logarithm just scales all the logarithms by a constant.