Windows 10 still contains the Control Panel. Some settings are only visible in the Control Panel, others in the App Settings and others in both. To find the Control Panel, which is a little more hidden than under Windows 7.
In Windows 7, you can click the Start button and then click Control Panel. In Windows 8 and 8.1
If you use Control Panel frequently, right-click the Control Panel icon in the Startup box after it starts. Click Pin to Taskbar. and then simply start it from the taskbar.
You can create a desktop shortcut to the Control Panel, too. Open the Start menu, scroll down the left pane to the bottom of the application list and click on the "Windows system" folder. Drag the "Control Panel" shortcut to your desktop and drop it there.
You also have other options to run the Control Panel. For example, you can press Windows + R to open a Run dialog box, and then type either Control or Control Panel and press Enter.
This command can also be run from a command prompt or PowerShell window. 
You often do not need to access Control Panel directly – that's what Microsoft does. Even if you use the Settings application, many preference pages point to individual Control Panel applets that contain additional settings.
Even the new section "Software" in "Preferences" refers to the classic tool "Programs and Functions", also known as "Uninstall or modify program".