Hi, and thanks!
icare isn't a script and you need basic knowledge of Ruby on Rails, HAML, CoffeeScript, SASS, MongoDB. If you need to implement new features, you need a quite skilled developer.
You can consult our wiki for more information. We have articles which explain how to setup a development environment, how to deploy on PaaS like Heroku and how to translate in your locale.
Feel free to ask if you have other questions