Please I need better explanations on objects and classes.

Answer 1

objects represents real objects in world like tree, car, house... and classes group related objects which have same attributes and behavior, for example: car is a class and conrecete cars are objects like bmw, audio, opel...

Answer 2

Just think of class as your house and objects as the things in your house.Class is a group of similar objects,which in this case are the objects in your house.What is the similarity?They belong to you.
Hope you understood.