What steps are needed to set up iCloud on Windows?
First, install the iCloud Control Panel from support.apple.com/kb/DL1455. Launch the control panel, sign in with your Apple ID and password. Then choose which iCloud features you want to activate such as Mail, Contacts, Calendars & Tasks, Bookmarks, Photo Stream.
From the official Apple Set UP Icloud Drive ON Iphone Apple Support manual, page 14
Have a follow-up question?
Answers from the official manual.
Common questions