Answer 1

An instance is an object, that is created from a class. This can be from a class written by a user, as well as from python classes. So an integer number stored in a variable is an instance from class int.

Answer 2

An instance of a class is the object that we really use in our program.
Class is a set attributes and functions while an instance is an object that uses those attributes and functions.

(I am begginer too, consider the python tutorial.)

Answer 3

example of instance?

Answer 4

but i cant access some class
and im being redirected to basic python course