Updated: 12-07-2018
Sign in to iCloud to access your photos, videos, documents, notes, contacts, and more. Use your Apple ID or create a new account to start using Apple services.
Your Apple ID is the account you use for all Apple services.
iCloud Photo Library automatically uploads every photo and video you take, making them accessible from your iPhone, iPad, iPod touch, Apple TV, Mac, or PC ...
https://support.apple.com/en-us/HT204053
Mar 27, 2017 ... When you use iOS 10.3 or later, you sign in to iCloud, the iTunes & App ... iTunes, iBooks, and App Store purchases without sharing accounts.
https://support.apple.com/icloud
Learn how to set up and use iCloud. Find all the topics, resources, and contact options you need for iCloud.