An from development mode into a production mode

i have been working on a app ,this is basically my first one , so want
know how the transition takes place from development to production, i
paperclip for uploading in my app so should i make any changes for it in
production.rb while deploying or anything else. pls kindly give a brief
description on wat has to be done, to deploy the app successfully and
how to deploy it…
thank u

For a beginner i think that its best that you go through atleast the
chapter of and try to deploy your app on heroku.

If you face any issues try solving it or come back with the details of
errors that you are facing.

hmm like r thr any changes needed to be made in environment while
and is a index file necessary as a default page