Search your Computer Icon :
This icon is equal to search button in Windows OS. Here, you have to give the name of the File or Folder for searching them.
Files :
This icon is equivalent to My Computer icon. From here, you can directly go to Desktop, Documents and so on.
Firefox Web Browser :
By clicking this icon, you can directly browse the internet. This is equivalent to clicking the Web Browser in Task bar in Windows.
Libre Office Writer :
This icon will directly take you to document preparation application like MS Word in Windows.
Libre Office Calc :
This icon will open LibreOffice Calc application. It is similar to MS Excel in Windows.
Libre Office Impress :
By clicking this icon, you can open LibreOffice Impress to prepare any presentations in Ubuntu like MS PowerPoint.
Ubuntu Software Icon :
This icon will let you add any additional applications you want. This can be done by clicking the Update option at the top right comer of that screen.
Online Shopping icon :
Using this icon user can buy and sell any products online.
System Settings Icons :
This icon is similar to the Control panel in the Windows Operating System. But here, you need to authenticate the changes by giving your password. You cannot simply change as you do in Windows.
Trash :
This icon is the equivalent of Recycle bin of windows OS. All the deleted Files and Folders are moved here.