What is touristd?
Solution 1:
What is touristd responsible for?
touristd is responsible for displaying a New to Mac? notification roughly after 5-10 minutes using macOS Sierra for the first time.
After you click on Show it will open the What's New in macOS page in Safari.
There is a preference file that gets created/modified after dismissing or activating the notification.
~/Library/Preferences/com.apple.touristd.plist.
Where can you find it?
/System/Library/PrivateFrameworks/Tourist.framework/Versions/A/Resources/touristd