README.txt

--- question: how self refers to different objects depending on where it is in a Ruby program ---

Self refers to different objects by allowing you to access the class self is called upon. If you were to have a self.method inside a class named 'Person' instead of having to write Person.method, you can use self to call Person. Self calls its parent class if its inside a method and prints the methods class name. If self is called outside of a method in the same class, it will print the class, although it will give it an object value aswell. 

selfclass.rb

class Person
  def self.example_class_method
    puts "We're calling an example class method"
    puts "'self' is always defined. What is 'self' here? Let's see."
    p self
    puts "That was self!"
  end

  def example_instance_method
    puts "We're calling an example *instance* method"
    puts "'self' is defined here, too, but it means somthing different"
    p self
    puts "that was self, again, but see how its's an instance of the class."
  end

  puts "You'll see this as the class is being defined"
  puts "In this context, self is: "
  p self
  puts "See? self is the person class"

end

Person.example_class_method
person = Person.new
person.example_instance_method