How to say "Goodbye" in Russian? informal way

How to say "Goodbye" in Russian? 

In almost every goodbye there is hope to see each other again. 

Here is a quick guide on how to say goodbye in Russian properly, wrap up a conversation in a friendly way and ensure you meet again.

How to say "Goodbye" in Russian?

 The most common and neutral way to say goodbye in Russian is Пока!  [Paka ]