It's not quite the same as what you are looking for, but I've known multiple people who were stuck in their attemp to learn to code before using railstutorial,

It's not quite the same as what you are looking for, but I've known multiple people who were stuck in their attemp to learn to code before using railstutorial, I view it and the book "sql: visual quickstart guide" as two very well designed intros that manage to avoid having sections with random jumps in difficulty and terminology usage that can leave true beginners behind.