Learn.md

Алгоритмы и структуры данных http://stackoverflow.com/questions/487258/plain-english-explanation-of-big-o http://www.intuit.ru/studies/courses/1121/310/info

Патерны https://github.com/nslocum/design-patterns-in-ruby

Ruby / Rails Building REST APIs with Rails - http://apionrails.icalialabs.com/book/frontmatter

http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-042j-mathematics-for-computer-science-fall-2010/index.htm