Start Apache and MySQL and if you want test your mail send option then you need to start Mercury.
Now you need to go server folder Click Explore on your XAMPP control panel.
You will go to this link G:\xampp\htdocs and Create one folder named Test as you want.Copy, paste and Exract your JOOMLA installation folder and all file. Download Joomla! 3.0.x from here.
Click phpmyAdmin-> Database
Below Create Database->type database name->Click Create