Open the Photos app on your iPhone, iPad, or Mac
Sign in with your Apple ID if prompted
Turn on iCloud Photos in Settings
On iPhone or iPad, go to Settings > [your name] > iCloud > Photos
On Mac, go to System Settings > [your name] > iCloud > Photos
On Windows, open iCloud for Windows and turn on Photos
Go to iCloud.com in a web browser
Sign in with your Apple ID
Select Photos to view your iCloud pictures
Make sure you are using the same Apple ID on all devices
Check your internet connection if photos do not appear
Wait for photos to finish syncing if they are still loading