Late March this year, I saw a post by the facebook page named “Code Energy” that the author of a book, “Computer Science Distilled”, will be giving a free digital copy of the book to those who will message him.
I got the book. After reading it, I asked him if I can share it with some friends and workmates.
After a day, the author replied:
Hi Jboy,
… It’s no problem, I want my book to spread and help as many people as possible.
I just don’t want it to be posted in public, because then, even people who can buy the book, would not buy it.
…
I’m very happy you like the book :) Once you finish reading it, let me know your feedback.
All the best,
Wladston Filho
He is a very kind author! He wants to help people! 
My feedback as a software developer
I already finished the book! It took me a very long time to finish it because there are other things I had to do/read.
I think the author has a similar mindset as the author of betterexplained.com — explain Maths/CS concepts in simple terms to capture the interest of people to study more about them.
I believe that it is a very good book for software developers who wants an overview of computer science.
I think this book can give more confidence to software developers who don’t have a degree in Computer Science and to those who did not have a very good Computer Science education (like me 
).
To those software developers who had a good CS education but have already forgotten most of them, this book will make them remember. And, if they are not sure if they really had a good computer science education, this book will give them reassurance that they already have the knowledge that they need for their work as a software developer.
And… I’m sure I will revisit the NoSQL and Functional Programming sections in the near future when I will begin to learn more about those topics.
