Avoid Object Oriented Programming

Good advices: "In many programming courses and tutorials, everything is going along just fine when there's a sudden speed bump of vocabulary: objects and constructors and abstract base classes and private methods. Then in the next assignment the simple three-element tuple representing an RGB color is replaced by a class with getters and setters and multiple constructors and--most critically--a lot more code." in OOP Isn't a Fundamental Particle of Computing. It just put OOP in its right place.

See also Don't Distract New Programmers with OOP: "The shift from procedural to OO brings with it a shift from thinking about problems and solutions to thinking about architecture."