Installation Problem

Hello respected Everyone.
I am the beginner student of PHP From one month, Please help me.
I don’t know how i install " Piwik # open source web analytic"
I just upload the folder Piwik to my server using using binary file transfer system by file zilla method.
But when i access this Piwik/index.php from browser . i found following error.

Piwik # open source web analytics

The class Piwik_Referers couldn't be found in the file '/home/xxxxxx/piwik/plugins/Referers/Referers.php'

#0 /home/xxxxxx/piwik/core/PluginsManager.php(242): Piwik_PluginsManager->loadPlugin('Referers')
#1 /home/xxxxxx/piwik/core/PluginsManager.php(161): Piwik_PluginsManager->loadPlugins()
#2 /home/xxxxxx/piwik/core/FrontController.php(224): Piwik_PluginsManager->setPluginsToLoad(Array)
#3 /home/xxxxxx/piwik/index.php(48): Piwik_FrontController->init()
#4 {main}

    * Piwik homepage
    * Piwik Frequently Asked Questions
    * Piwik Documentation
    * Piwik Forums
    * Piwik Online Demo

And when i access this Piwik/piwik.php from browser . i found following error.

Warning: parse_ini_file(config/config.ini.php) [function.parse-ini-file]: failed to open stream: No such file or directory in /home/xxxxxxxxxx/piwik/core/Tracker/Config.php on line 54

Warning: Invalid argument supplied for foreach() in /home/xxxxxxxx/piwik/core/Tracker/Config.php on line 57
Piwik is a free open source web analytic alternative to Google analytic.

I don’t know where i set database configuration?
What type of Folder permission (If need any Folder)?
File transfer method?

If anybody know about that problem Please help me .
please write down the complete step by step detail to install “Piwik”

Your Best Regards