Are there any good courses for learning about Object-Oriented Programming?

Question

I'm looking for some good courses on object oriented programming. I've been programming for about 4 years so far, but I don't feel like I have a SOLID grasp on OO.

How did you learn?

Answer 1

Its all learning by doing. Courses and books are good, but the bottom line: Coding is all about writing programs; start from there. Another thing I personally think is very important: read other peoples code!

Answer 2

Try these: http://webcast.berkeley.edu/course_details_new.php?seriesid=2008-D-26263&semesterid=2008-D