how to use Classic start menu on windows 8 or 8.1

Classic shell app allow you to use Start menu and some other features on windows 8/8.1

Classic Shell™ is free software that improves your productivity, enhances the usability of Windows and empowers you to use the computer the way you like it. The main features are:

• Highly customizable start menu with multiple styles and skins
• Quick access to recent, frequently used, or pinned programs
• Find programs, settings, files and documents
• Start button for Windows 7, Windows 8 and Windows 8.1
• Toolbar and status bar for Windows Explorer
• Caption and status bar for Internet Explorer

you can also change Start menu orb using replace start button, here are some Start menu orbits . 

                                                       

Download Classic Shell from Here 
original source = http://classicshell.net/