If you get totally stuck, here are some resources that may help you: Roots Discourse. Actually, you may want to head over and read this through really quick. It's nowhere near as long as this and may be good to have in the back of your mind when reading the rest of this document. Capistrano Website with manual Screencast on deploying WordPress with Capistrano.
Bedrock is created by the good awesome people behind Sage and is described as a "WordPress boilerplate with modern development tools, easier configuration, and an improved folder structure." Read more at
https://roots.io/bedrock.