OK so I know basic-intermediate PHP. I know functions, I know variables, I know arrays, I know classes.. blah blah. Where can I get started with creating add-ons for XenForo? I've got my XF locally set up via Zend Studio on my localhost, but I want to start tearing it apart. The problem I have is that I'm not used to MVC frameworks, I have no idea what's meant to be in a model, a view or a controller and the only definition I could give is a Google'd one. Any ideas on where I can get started, hopefully with some reference to XenForo?