https://i.ytimg.com/vi/fUjJ2Zk_Isk/hqdefault.jpg
Blender Tutorial: http://www.blenderguru.com/introduction-to-smoke-simulation/
During the 27-minute video you will learn:
◦The Old System Vs New — What’s changed?
◦How the Smoke Simulator works
◦How to bake and render realistic smoke
◦A behind the scenes look at creating a smoking city
source