Object oriented programming is a good way to keep coding simple enough to not be frustrating to do when developing anything, especially something large. So reading up an article or tutorial should explain it well enough as it's far from rocket science.

Either way though, OOP is great and I doubt many would have a problem understanding the concept but what I've never understood (probably because I don't go into sysdev) is pointers...
It seems nearly every C++ tutorial and guide has a whole paragraph on pointers not far from the beginning but no matter how much I read about them there's one thing I can't grasp - their practical usage.
Addressing memory? For what? Why? And so on...