Missing "Google Play"app My phone (Nokia XL) did not come with Google Play application. How do i install it (i've already tried with some weird .apk files)? If my phone cant use Google Play can you at least tell me if there is some way i can download the apps on my computer and then send them to my phone through USB.
Thanks
You can't use Google Play unless your phone has installed the Google Play Services to the /system partition, which is only possible through flashing it. (If you don't have root access).

The .apk of Google Play is only for use with phones installed Google Play Services.

The Play Store is the frontend of the Store, which only shows you information and let you interact with the services.
The Play Services are installed at the /system partition (because they need higher privileges to install and uninstall applications). This is the backend of the Play Store (and other Google apps). 

Means:
If you don't have the Play Services installed, the Play Store can't do anything.