Started learning Rails, so may this question is obsolete but yet I want to know what exactly it is in rails.
I am trying to create a login form for users, so after googling i came across devise(yet not sure what exactly it do, but i gave a try yet).
Link for the tutorial- http://www.slideshare.net/wleeper/devise-and-rails
I am stuck with page 4 of 22 at –
Add some flash notices into the base template

I dont know where i do need to add these line.(things are on localhost) and I would like to know that I really i am following the correct tutorial to create a login form in Rails?
Base template is
application.html.erbby default.