aprend.io is a Front-End course (only HTML & CSS) in Spanish and for free, mainly composed of videos and reference code.
This is a Middleman project. Middleman is built on Ruby and uses the RubyGems package manager for installation. These are usually pre-installed on Mac OS X and Linux. Windows users can install both using RubyInstaller.
Access project root folder and...
gem install middleman
bundle install
To run the server
bundle exec middleman
To build the static site into the build folder, run:
bundle exec middleman build