Math was one of those subjects I hated in school. Even through college, I did barely enough to get by in all the math classes I've taken. However, at this point in my life, I find that I'm reaching this boundary in my learning experience, where my shoddy grasp of mathematics is hampering progress.
That said, I'd like to ask if any of you have any math websites, forums, etc. that you can share with me that might provide me a refresher course in the lower level math like entry college level algebra, geometry, and so on. Particularly I need some pretty in depth explanations and material on matrices, vectors, pre-calculus graphing. The majority of the information I've been able to find by using search engines has been archaic and assumes the reader is familiar with certain concepts that I am not.
Any help would be appreciated.