Receive Push Notification in Windows 8.1 using WNS

I am developing Windows 8.1 Application. I want to implement push notification using WNS. I have updated my app to dashboard and also i have associate my app with app store . I follow Push and periodic notifications client-side sample. I debug this sample and found the channel URI (notify.....com) .I am trying to get my app channel Uri but I am not able to get any Uri .I think I am not implemented properly. Please help me to trouble shoot this issue and share some idea for the below points.

1. How to associate Windows 8.1 App with App Store.

2. How to enable Push Notification Service using WNS ( any other procedure also).

3. Local Configuration.

4. How to get channel URI.