Before i start learning php, many sites like phpBuddy say to donload php installer, Apache server and MySQL. So simply i want to know what is the use of web server and MySQl.More importantly, Also tell me how to use them correctly. If possible provide me lnks from where i could download them. i have already downloaded php installer from http://www.php.net/downloads.php . So what should i do now? Plz help.