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I've a met a wonderful resources about Scala programming language.
It's called Scala Tour and was created by several Scala enthusiasts: 

• Kay Yan
• Snack Bandit
• Jim Schubert
• Christopher Hilla

The cool thing about Scala Tour is amount of love and details that the authors have put into it. You may consider it as a guide where near all sweet parts of Scala were touched and illustrated with a short description and interactive example. That is right! You may write some code right into the browser window and run it.

Did you heard that Scala is too complex? Yeah, there is a good amount of truth in that statement, especially in the wrong hands. However, Scala Tour may definitely show you many cool and powerful Scala features in an easy way.

Hello friends! I want to open a new category at my blog with this post. I called it "References".
I will regularly publish under "References" category several references to various interesting videos, articles, books, etc. There will be no cute kitties pictures :-), only several cherry-picked materials about art, technology, science, etc. Let's get started!

1. Public Key Cryptography: Diffie-Hellman Key Exchange
In this video you will find a visual explanation and demonstration of Diffe-Hellman key exchange algorithm. Imagine that you need to establish an encrypted communication between agent A and agent B over the public channel. After watching this video you will know how to do it!

2. How a quartz watch works
Engineer William S. Hammack explains the amazing nature of the quartz watches work, and how it can be so reliable, precise and cheap at the same time!