This is the gold standard. It will both give you your goals very quickly (rails project-name, cd project-name, rails generate scaffold my-page ... where ... is some arguments to the scaffold generator that you'll have to look up and tailor to fit my-page) and give you, eventually, formidable knowledge on arguably the best web development platform going.

but did not offer step by step instructions on how to translate that online.

This is tackled by the rails tutorial - in the process of following the tutorial you will actually, step by step, host your website on an external provider and visit it in your browser like everybody else.