[dorfuss]

This is an excellent question.

There were many "Aha!" moments in my journey. Here is a couple of honest examples:

* Action Script 3.0 - It may sound stupid and unlikely place, but classes and OOP started to make perfect sense only when I could draw shapes in Flash and then manipulate them with Action Script. Suddenly the idiotic examples of cars, vehicles and bicycles or animals, cats and dogs were unloaded from my mind and OOP really sinked in.

* Java for Dummies - Also unlikely place to look for answers, but TTD and OOP made sense when I read the book many years ago. Somehow when they said "everything is a class in Java, there are no real primitive types" I really started to translate the world into objects. I am not a Java programmer, but it helped a lot.

* Tutorialpoint - YES, I will say it. It is an excellent resource, even if it teaches bad style and is outdated (as some people rightly point). They reduce the number of things to learn. You can refresh your memory on the spot, you can learn (if you have experience) an entire language over one weekend or maximum one week. Afterwards you can go to references and more complicated publications, but they are an excellent starting point.

* Derek Banas on YouTube, especially Design Patterns. The examples could be more real-life based, but he makes sense much better than the original GoF book.

* Code, Tech, and Tutorials on YouTube, especially about CMake.