0 How to discover APK's package name,version.permissions and e.t.c.

To discover *.apk package name,permissions,version and e.t.c. before installing it on the device,
all you need is to download & install Android SDK (if you already don't have one).

Go to your "X:\android-sdk\platform-tools" and run in CMD "aapt.exe dump badging [APK PATH]".
This will print in CMD all the info.

If you don't want to install Android SDK the easiest way for you will be to find the application on Google Play.
For example search for "Angry Birds" the link in Google Play will be :

https://play.google.com/store/apps/details?id=com.rovio.angrybirds&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5yb3Zpby5hbmdyeWJpcmRzIl0.

As you see this is another way to get only the package name of application.

P.S. : Don't forget that you always can check additional flags of executable by executing it without parameters,for example "aapt.exe".