Ruby on rails help!

rubyonrails-talk
1

Can someone enlighten me about

    * Public Instance Methods.     * Public Class Methods.     * What is the root class for all Ruby Classes if there is one.

2

Can someone enlighten me about

   * Public Instance Methods.    * Public Class Methods.

as in what's the difference? instance methods are methods you call on
an instance, class methods are ones you call on a class. For example if Person is an ActiveRecord model then Person.find is a
class method, but save is an instance method, ie some_person.save
where some_person is an instance of Person

   * What is the root class for all Ruby Classes if there is one.

Object

Fred