Frameworks

Other than http://codeigniter.com, are there any frameworks you would suggest using? Preferably lightweight, well documented and flexible... which sums up pretty much any framework. ha.

I personally don't use any frameworks, I find them unnecessary and 90% of the time unnecessarily abstracted. I have some experience in Cake which seemed OK as far as frameworks go.

Since you're still relatively new to PHP (unless I'm mistaken) I'd strongly suggest you stay away from frameworks. While frameworks can make stuff easier they take away from learning how its done which is important to know. If you just want to screw aroun with them, Cake, Zend and Codeigniter are popular.

In joomla you can get almost every thing, only takes efforts for customization as your requirement of designing.