Developer: Need some cues from well-designed W8 apps

Hi guys! I'm a college student and a newbie Windows 8 developer. I want to make an app that acts as a college portal for the students to get info and stuff.

I'm looking for some apps on the store that have really nice layouts and eye-catching designs so that I can try to get some hints on how to implement my own app's visual appeal. So I would be very grateful if you guys can suggest me some well-designed Windows 8 apps, it would help a beginner like me on how to develop good design on my own. Thanks!