Now we will show you Install step By step .At first Extract joomla file in test folder and open browser and type http://localhost/test and fill step by step Below picture Step by step.
Fill all Main Configuration -> Click next
Select Database type->Type Host Name->type Username it will be always root in local server.->Password will be Blank if you are not use it before in XAMPP security .->Database name ‘test’. Go to next
If you want Blank website then click next if not then check blog Or anything you want.Click next and wait.
Click Remove Installation folder and wait then Go to Administrator Site.