Enter the shortcut key command+space to open spotlight search, enter system preference to enter the system configuration interface, all configurations are completed here.
Here are a few commonly used configurations for your reference
Desktop & Screen Saver > Desktop Change the desktop background, which can be set to rotate automatically
Desktop & Screen Saver > Screen Saver Change the screen saver style, you can display the time during the screen saver
Another useful one is Hot Corners, which can set some shortcuts, such as: black screen when moving the mouse to the upper right corner, etc.
Then the Docker configuration
Personally, I prefer to put Docker on the left side of the screen and hide it by default, so that it can have a wider visual space. When you need to display Docker, you can use the mouse to approach the left border of the screen, or you can use option+command+d to hide and display Docker
Set up App Store automatic updates
Bluetooth is turned on by default and can be turned off when not in use
By default, the Guest account is open, and it is generally unavailable, so close it decisively.
Finally set the time and display everything that can be displayed
