Classes, Properties, and Methods
Object-oriented programming comes with its own set of jargon. You will have to learn a little bit of it to keep up, but only a little.
The most basic concept in OOP is the class. A class is simply a generic description of something. In real life cars, apples, and cats are all types of classes. Not all cats are the same, but conceptually there's such a thing as a “generic cat”: mammal, quadruped, carnivore, small ears, long tails, and they sleep a lot. OOP also has the concept of a subclass, which is a more refined concept of the generic class—like a housecat, felis cattus.
The next two terms go together: an object is an instance of the class. If I wanted a concrete, physical example of something from the housecat ...
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