This document describes some things about how to make a module for MyPlaza. If you are uninterested in doing this, you probably shouldn't be reading this :P
Modules allow you to extend the functionality of MyPlaza. Before developing a module, you will, at the very least, need to know some basic PHP coding, and know how to make a MyBB plugin. If you have no knowledge of PHP, I suggest you search for some basic PHP tutorials - a quick Google search should reveal a plethora of wonderful guides available. After that, please familiarise yourself with how to make a basic MyBB plugin. The hello.php supplied with MyBB should be a decent example. Or, if you can't be bothered, hopefully you can pick it up during this guide :P
Modules are pretty much the same as a MyBB plugin, except they somewhat extend it. Primarily, the aim is to keep everything into one file (for easy uploading via AdminCP, and so that there isn't a tonne of files around the place).
There are three demo modules provided - stored in the /inc/plugins/myplaza folder. Please use those as example modules.