[DanielN]

I would simply say that if you've gone through w3schools tutorial then you know enough to just work on your project and use http://stackoverflow.com and http://php.net .

I found that one of the biggest hurdles for going from a complete beginner - just learning the basic elements of programming - to an intermediate beginner - starting to be able to figure things out for yourself - is figuring out how to get answers to your questions online.

Knowing enough syntax and nomenclature to phrase your questions to google is no easy feat when you're first starting out. My main suggestion, other than "just try", would be to start reading PHP related questions on Stack Overflow.

If you know what loops are, you know what an if statement is, and you know most of the basic request and response arrays built into PHP (see w3schools) then you're ready to build.