Topic: Ruby Orphand--need help


I am a java developer with basically zero knowledge in RR. Recently a colleague of mine with zero background in IT was asking me a help about Ruby on Rails project / code he got. What it does was basically a JSON / REST webservice. The webservice reads data from database and respond to a request with json format.

My question now is basically given the complete Ruby and Rails project code (how do I run the project) such that it will be reading from the database. Guys I know there are a lot of discussions and threads about this in this forum already but maybe you could help me or guide me on how to run that project as I have zero knowledge in rails and would basically lost immediately upon reading RR articles.

A step by step command on running the project I got will be very much appreciated wether linux or windows will do.

Thank you