TITLE: Self studying higher mathematics?
QUESTION [6 upvotes]: I'm fairly well-versed in calculus but I would like to explore beyond calculus. I have looked into the basics of some topics in higher mathematics such as group theory and abstract algebra and they intrigue me. I am wondering if there are any recommended methods or resources I should use to learn more about these topics. And is there any recommended starting point?

REPLY [2 votes]: These free video lectures by B. Gross at Harvard are outstanding:
http://www.extension.harvard.edu/open-learning-initiative/abstract-algebra
They even have a set of notes taken by a very capable grad student.