Confused on the Basics

I have an iMac, an Air and an iPad2. I don't use the iMac much anymore so I'm trying to get the Air and the iPad setup so I can use iCloud. I would like my contacts, photos, music and some documents to be shared between these two devices. Here's what I did:

1. Synched the iPad with the iMac for purchased music so the iPad has the music I want on it.

2. Made sure the Contacts on the Air are up to date.

3. Checked all of the iCloud options (mail, contacts, etc.)

4. Selected all the options on the Air's iTunes Store for automatic downloads.

5. Typed a new contact (test) onto the iPad's Contacts.

So, now what? I went to icloud.com. It indicates I don't have any music and I don't see the new Contact. Does one of my devices have to be a master or something? Thanks.

jor