I meant the 30 sec link. It wasn't clear how exactly to start it. I thought that I have to type a command to start and then follow the steps they mention in that part.
As for the samples I downloaded all the samples you mentioned. I unzipped the Phonebook Tree4notes in /eclipse/workspace/Phonebook /eclipse/eclipse/Tree4Notes. I also followed with samples.zip (which opened all the tutorials). But in the studio Repository Explorer tab I can't see Phonebook Tree4Notes directories as they show in the tutorials. I believe that these directories will be used further in the later stages. Can you explain me, why I don't see these directories there? Should be in other place?
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