Ruby on Rails

Hi,

I'm with a very basic doubt in MVC in RoR. I'm new at RoR, I had never developed an app in Rails since the beggining, just few things separately.

I want to have a sign in page, like the first page the user see.

After sign in I will have another page where I have a menu where user can do the basis operations (new, edit, show, ...).

The stuture of the webpage is:

sign_in page -> page with basic operations -> operations

After creating the controller/views/model to do those operations, in which page should I put the sign in page?

I mean the sign in page is not related to the controller, so on /app/views should I create another file (see below), for instance called index.html.erb? 

If controller is named A, I will have the  following structure:

/app/controller

- A_controller.rb

/app/views/A

- edit.html.erb

- new.html.erb

- show.html.erb

- (index.html.erb) --------> for sign in page?

- (index_2.html.erb) --------> page with basic operations?

After do the sign in it will be redirected to the page where I will have buttons (for instance) with new, edit, show operations, this page should be another page created by me (again) on the app/views/A ?

How do you do it?

I don't know if you understand my problem. Please if not tell me, all help is welcome.

Thanks

Rita