Hi..
I have 5 years Rails experience and has developed some spree commerce app.
I think my experience will be enough to help you set up Spree in your server.
Thanks
The process would be to install ruby, rails, and the spree gems for example. I have developed, deployed and maintained several rails projects. ( see profile).
I have installed Ruby on Rails around 50 times so I can explain very efficiently to install Ruby on Rails and also I will teach you for future so you will install yourself.