Starting with UNITY. what first?

Hi everyone, im a programmer and a graphics artist and I have experience programming under the directx9 api, however, I dont know where to start with this huge engine. Under your own experience, where should I start with UNITY to get used to the interface and start developing apps?

I have seen the 6 video tutorials in the web page and checked some of the references, I downloaded some example applications but its just huge!! and I think the best start point would be creating some kind of "Hello World" to start with simple stuff and then advance to more complicated topics. how could I do that?

of course, if you think that there is not an easy starting point, I will accept it.

thanks!!

3D Buzz has an excellent series of introduction videos taking you through the terminology, interface and all the other aspects of the editor itself.

http://www.3dbuzz.com/vbforum/sv_videonav.php?fid=1ec1a7be9c0d4cf9e7a31525250a30ff

They also have an excellent Simple Game tutorial: http://www.3dbuzz.com/vbforum/sv_videonav.php?fid=db25cc88fdc47f4afd9562b6abb1332a that take you through writing a simple space shooter, line by line.

There are also more advanced videos coming from these guys soon, and best of all it's free!

When it comes to coding, you can choose Javascript (Unityscript), C# or Boo.

The best way of learning the API is by using the Script Reference http://unity3d.com/support/documentation/ScriptReference/index.html