The Stanford algorithms specialization (https://www.coursera.org/specializations/algorithms https://www.coursera.org/specializations/algorithms) is outstanding.

The Stanford algorithms specialization (https://www.coursera.org/specializations/algorithms https://www.coursera.org/specializations/algorithms) is outstanding. Professor Roughgarden is the best instructor I've ever had, online or in person. He's got infectious enthusiasm about the topic and does a great job explaining the algorithms and how to analyze and understand them.