How can i get icloud when i dont have a pc or iphone or ipad just have a regular tablet

Contact apple help line they will assist in unlocking

You can attach some flash drives to Apple's $29 iPad Camera Connection Kit. (If you have an iPad with a Lightning connector you'll additionally need Apple's $29 Lightning to USB Camera Adapter.) Let me underscore some. Some flash drives require more power than the iPad can provide and won't work.

For the second question, here's also a guide to help you back up iPad music to iCloud.

1. Connect your iPad to a Wi-Fi network.
2. In iOS 8 or later, tap Settings > iCloud > Backup. ...
3. Make sure that iCloud Backup is turned on.
4. Tap Back Up Now. ...
5. Make sure the backup finished by tapping Settings > iCloud > Storage > Manage Storage, and then select your iPad.

If you have a new computer, you can also backup iPad music onto it.
http://www.leawo.org/tutorial/how-to-sync-iphone-to-new-computer.html

Backup the IPad, in fact do 2 backups, 1 to
ICloud, 1 in ITunes. If you have sensitive data, health data, for example, make sure to turn encryption on. Start trying to restore from Itunes because it preserves your music. If the restore from ITunes doesn't work or something is missing, restore from the ICloud backup. Hope this helps.

You will have to remove pictures, videos and apps that you are not using any more. You can sync the ipad to a pc or mac and save the pictures and videos you want.The icloud is tied to your apple id. go to this link ( iCloud ) and sign in with the same info you use to sign in to the app store. The icloud gives you free online storage for pictures videos and documents that you have on the ipad.

Unlock Timeframe: 7-15 working days
iPhone Carrier iCloud Activation (Clean Only) Choose an option... iCloud Activation (Clean Only) iPhone Model Choose an option... Choose an option... iPhone 6 Plus iPhone 6 iPhone 5S iPhone 5C iPhone 5 iPhone 4S iPhone 4 iPad Clear selection

IMEI: Please add IMEI number which contains 15 characters only

just istall iTunes software from Apple and plug the iPad connector cable to an USB plug on the macbook.
then turn the ipad on and start iTunes - you will see your iPad in the middle on the left side of the screen - then it prompts you to sync
Apple iTunes Download iTunes Now Apple iTunes Download iTunes Now Sync your iPhone iPad and iPod with iTunes using USB

YLog into the "Find my iPhone" feature at iCloud.com You'll need to log in with your AppleID, then it will give you several options for locating your iPad.