Q: how do i retrieve shared documents on my icloud account

Hi hthamir,

Welcome to Apple Support Communities.

The most common way for someone to share files using iCloud is through email. The first link below will give a overview and description of what iCloud is and the second will walk you through checking your email using a web browser or Mail on your Mac.

Apple - iCloud - Your content. On all your devices.

https://www.apple.com/icloud/

iCloud: Read email

http://support.apple.com/kb/PH2638

Cheers!

-Jason