Any good abstract class / polymorph guide?

Hello,

I am currently coding in C# because only other language I know is java. Anyways, I am looking for a good abstract class guide for Unity, but I can’t seem to be able to find it. When I search for them on Google, all I really get are Unity Answers thread asking why we need abstract class.

I tried this - All about abstract classes. - CodeProject - but I am looking for something more focused on Unity.

Unity has a good base level abstract class called Monobehaviour (if I’ve spelled it right).