Operating Systems consists the topics such as introduction to operating systems, types, functions, command line operations, windows, introduction to GUI, windows operating system, basic windows elements (desktop, taskbar, my computer, recycle bin, starting) shutting down windows, file management, windows explorer, windows applications (control panel, character map, paint etc), finding files and folders, start programs, changing windows settings, creating shortcuts, system tools (disk scanning, disk defragment, backup, restore, format)