C# Class and Array

Hello, im new to unity, only made a few things and rpg elements so far, and ive comen to the point where i think its time i learn about classes and arrays.

I really dont have any experience with either, the only thing i iknow is that a class is where you can make like a "Car class" and then when you create a car script for a bwm or ferrari etc then it inherits from the car class somehow. And that arrays is some kind of listing system :)

if anyone knows a good tut or anything i would appreacite it alot , or even help me with learning it it would mean alot :-)