I don't know how to open icloud on my ipad

Hi Gladysrice,

Welcome to Apple Support Communities.

It sounds like you've created documents on your Mac and uploaded them to iWork for iCloud beta, but now want to know how to work with those files on your iPad. To do that, you just have to open the corresponding iWork app on your iPad.

iWork for iCloud beta: Frequently Asked Questions

http://support.apple.com/kb/HT5779

Q: How does iWork for iCloud beta work with Documents in the Cloud?

With both Documents in the Cloud and iWork for iCloud beta, iCloud stores your iWork documents and keeps them up to date across the iWork apps on your Mac, iPhone, iPad, and iPod touch. With iWork for iCloud beta, you can create, access, and edit these documents from a browser on Mac or PC. For more information, see Opening iWork for iOS and iWork ’09 documents in iWork for iCloud beta.

I hope this helps.

-Jason