First step

In this tutorial we understand about the file structure of our web app.

Before that
    1.obtain a new copy of symfony framework from here.
    2.make a new folder inside your server and named as "webapp".
    3.create a folder structure like below:
                 

www/ <- your web root directory
    webapp/ 
        app/
            cache/
            config/
            logs/
        src/
            webapps/
                HelloBundle/
                    Controller/
                    Resources/
        vendor/
                   
            
        web/

      4. place your unarchived symfony inside the vendor folder.