Super or the launcher icon will open up the deepin menu.
Changing the menu bar is quite intuitive.
When you start the menu is full screen. You can just start typing to find the application you want to launch.
You can arrange the applications by category.
Add to startup is possible too from the menu.
Use the right mouse click on the dock to set the settings and click on the icons on the top left and right when in full screen icon mode.
You can set it to the top, bottom, left and right.
You will have your system icons ready for action.
You can add applications to the dock with a right mouse click on an application.
There is also the multitasking view launcher.
There are multiple settings of the dock in deepin. Explore them with right mouse click.