PHP is easy to learn...
all u need is basic programming syntax... like C++ maybe...
coz am starting with C++ knowledge....
or if u still doesnt have it, just go through many websites that thaught about programming syntax...
next, what u need is to setup ur own server...
for me, am using XAMPP, or maybe WAMP... which includes PHP, Apache, MySQL in one package... just install that software, and u have it all set-up for u....
when u start to do ur programming, all u need is actually the PHP Manuals which u can get it free from www.php.net/manual...
happy trying.....