hello NL webmasters i will be posting some ruby on rails tasks and i want to see your answers

Question 1
Create a route to be
able to display
pages with different
information about
different types of
beer. The route should recognize
URL paths like / b e e r / < b e e r _ t y p e> and should use the
same controller
action for each type
of beer with the
actually beer type
passed into the controller action as a
parameter. The valid
beer types are:
IPA
brown_ale
pilsner
lager
lambic
hefeweizen
Any other type of
beer specified
should generate a
404 status code.

Question 2 What is the difference between a class and a module?

Question 3 Describe the difference between class and instance variables?