How to back up to iCloud before updating to iOS 8

[iMore.com]

If you're planning on updating to iOS 8 on your iPhone or iPad, it's always a good idea to make sure you've backed up first. While it's not common for things to go wrong, software glitches can and do happen, so always protect your data first. Luckily, backing up to iCloud is easy enough and can give you the peace of mind in knowing that if something does go wrong, all your data is protected.

Full story from the iMore Blog...