For those users who have already gotten used to the Windows desktop style (e.g. Start button, Taskbar at the bottom, minimize/maximize/close button at the right top). Here is how to make the Ubuntu Gnome desktop work in the similar style.
1) Super + Left Alt + Right click the panel that you want to edit, then choose ‘Property’ or ‘Add to panel’
2) Open a terminal, then run gsettings set org.gnome.desktop.wm.preferences button-layout ‘:minimize,maximize,close’.