Spose Id better start lookking at learning about classes. Anyone know any good tutorials, and how good were they? (ie have you used them...)
As for now, there aren't many difficult possibilities in PHP concerning OOP. That short notes you can find in the manual seem to be enough (of course in case you DO have some knowledge about OOP in general 🙂)
For a start, check out the PEAR base classes that are contained in the php distribution you downloaded.
DevShed (www.devshed.com) has some good PHP OOP articles, its the usual Car analogies but good none the less.