play new myFirstApp creates a new app, in the current directory, inside a new folder called myFirstApp
Now try to run it. First go inside that folder (cd myFirstApp), and run it (play).
[Optional step] You can transform your Play application into an Eclipse project, by running play eclipse. If you want Play’s source files and javadoc to be attached to the Eclipse project, you should execute play "eclipse with-source=true"instead.
The Play Framework is probably one of the few web frameworks that installs and works pretty well on Windows. I started web development with Django, but I had to learn Python and Django at the same time, and the documentation was not so good as they said it was. So I decided to leverage my Java experience and use Play. And since Play supports both Java and Scala I could refactor and move to Scala at any time.
On this guide I’ll just refer to these variables and not their absolute paths:
%JAVA_HOME%, where Java installer installs JDK, e.g. C:\Program Files (x86)\Java\jdk1.7.0_25\bin
%PLAY_HOME%, where you extract the Play! Framework files, e.g. C:\Play\play-2.1.2