User's Guide/Helpful Info
When you want to view the User's Guide or tips on using your PS4™ system, select 
(Settings) > [User's Guide/Helpful Info].
User's Guide
Displays this User's Guide.
The User's Guide can also be viewed on any device with a compatible web browser.
https://manuals.playstation.net/document/
Discover
View previously received notifications containing tips on using your PS4™ system.