Update README.md

Author: rodrigogiraoserrao

README.md

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 # Neural Networks Fundamentals with Python
 
-Repository holding the code for the NNFwP series of blog articles available [here](https://mathspp.com/blog/tag:nnfwp).
+Repository holding the code for the “Neural Networks Fundamentals with Python” book available [here](https://gum.co/nnfwp).
+
+---
+
+
+Ever wondered what a neural network really is, how it works or how to implement one?
+Well, I did, and that is why I tried implementing one.
+And I failed.
+Some years later, I tried again, and it worked!
+And it was amazing!
+Now, I just want to help _you_ do it yourself, so that you can take a peek
+behind the curtains of this world of machine learning, deep learning,
+and all those buzzwords.
+
+In this short book, I will take you through the journey of implementing a neural network
+from scratch, and then we will use these networks _you_ created to perform
+machine learning tasks.
+We will also play around with them and so all sorts of really interesting machine learning
+and deep learning experiments.
+
+The book explains you the things that are needed, step-by-step,
+and gives you a reference implementation that you can find in this repo.
+
+By the time you are done with the book, you will have at your disposal
+a simple neural network framework that actually works, and that you have already
+used to explore interesting concepts from the worlds of machine learning and
+deep learning.
+By the way, if you are unsure whether or not this book is for you,
+you can always read its chapters for free [on my blog](https://mathspp.com/blog/tag:nnfwp).
+
+---
 
 To make sure you have all dependencies installed (which should be only NumPy, really)
 be sure to check you meet the requirements set in the [requirements file](./requirements.txt).