Recently I did a 4 parts tutorial Tom McFarlin wrote on object orientated programming and namespaces in WordPress and it really shed some light on both subjects for me. The link.
IT, webdesign … programming they all come with the aspect of learning. Like PHPStorm just had a mayor update, things change and you need to find out how.
If your new to object orientated programming or namespaces the tutorial by Tom is a very nice way to start.