1. Set up your System
You must have a working installation of Ruby, ImageMagick, and one of SQLite, MySQL, or PostgreSQL. See the "Installing Refinery Prerequisites" guide for more information.
2. Install the Gem
gem install refinerycms
3. Generate an Application
You now have a "refinerycms" command available. To see a list of available options (such as selecting a database), run refinerycms without any arguments.
refinerycms path/to/my_new_app
This will create a new Refinery ready Rails application, install all the dependanceies using bundler and setup your database.
4. Start up your site
That's it! If all went well, then starting your site should be as simple as running:
cd path/to/my_new_app/
rails server
Now visit http://localhost:3000 and you should see your Refinery CMS site and you will be prompted to setup your first user.
That's all it takes to install and run your Refinery CMS site!
5. What now?
We highly recommend you follow through the "Getting Started with Refinery Guide". It teaches you how to customize your site design and create your first custom engine.