In this article you will learn how to setup iCloud on your Windows 8/8.1 PC. The iCloud Control Panel is installed along with iTunes, but if you have skipped this step, download it from this link: http://support.apple.com/kb/DL1455
Once installed, go to the Control Panel > iCloud.
Sign-in with your Apple ID and password.
The iCloud is ready for use, select the items you want to sync and click on Apply.