Ask HN: How a self-learned programmer learn algorithms/scalable system?

Algorithms: http://ocw.mit.edu/courses/electrical-engineering-and-comput...

Coursera has both Sedgwick's lower division sequence in Java and Roughgarden's two class upper division sequence using whatever language the student chooses.

https://www.coursera.org/course/algs4partI

https://www.coursera.org/course/algo?from_restricted_preview...

There are also upper division courses by Sedgewick as well.