PHP tutorials

I’m contemplating writing a mini-tutorial about OOP in PHP. I know there are many out there already but I have a friend in particular I’m trying to get to get to grips with this so he can help with parts of Galaxia Reborn (some parts are superbly modular; I may put the specs for such online and maybe have an online editing option of some sort for anyone who wants to help). Either way writing a tutorial would probably be a good exercise as well as a good source of useful content . “to get to get to” has to be a quote of the year or something. PHP, OOP, programming, tutorial