What is the arguments in functions. What is a method.

Answer 1

The arguments in a function are values that the function can access. If you make a function that draws a square, you need to specify where the square is drawn and the value is put in an argument.
A method is a function that belongs to an object.
https://en.wikipedia.org/wiki/Object_(computer_science)

Answer 2

Abhyodaya Dubey, please start one of the tutorials available here - it's all explained there.