if you know the basics
print on the screen, define variables, create arrays and so on, then I recommend using the function reference.
Is so useful!!!
Just go to your favorite search engine and type for example:
php image functions
and you'll get a list of links where all the image related functios are, with detailed explanations about the use, possible bugs, php version, etc...
php array functions
php mysql functions
IF you need a little bit more , then go to this URL -->
useful links --> http://www.php.net/links.php
begginer tutorial --> http://www.php.net/manual/en/tutorial.php
I've learnt all I know looking at different codes I downloaded from all those fantastic free resources websites / portals and trying to undestand how they work.
Of course you can't miss the forums
The best thing on the net
P.D Hey, I just realised that you are from my city