What is PHP?
What can I do with PHP?
PHP can be used for exchanging information with databases and web servers, performing mathematical operations, creating and modifying files, and making interactive applications.
Where should I start?
There are powerful tutorials all over the web. There are great YouTube videos with demonstrations of specific PHP operations. PHP also has a great website with extensive documentation: www.php.net
Since you're already here, why not start with our great examples and tutorials?