Looking for .apk files for android

It is shared in the Android Gallery.
 Use Open Manager to copy files to or out of C:/users/public

To import apps into YouWave 

 Step 1. In the menu bar above, click "View" then "Apps" to see your local apps in your working directory: "C:\Users\Acer\youwave\".

 Copy app files (ending with .apk) that you have downloaded to this directory.

 Step 2. Click menu "View" then "Redraw Icons" and wait for a moment. App icons should be updated with new ones.

 Step 3. Double click on any app to install it into Android and run.

Where and how to download apps 

 Method 1. Click menu "View" then "Online Content". Click and run one of the app stores or online apps,

   ex. Amazon Appstore, AndAppStore.

 Method 2. Use your browser to go to other web sites to download and then import apps into YouWave,

   ex. www.getjar.com, www.slideme.org.

   Copyright 2012 YouWave Inc.

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I still can not find .apk files.  What are more detailed instructions?
Could these files be stored on my android.  I search for .apk and can only find easy-root.apk which I think is an app blocked by ((android market)/(google play)) and requires a manual install.