Nowadays, I don’t know how much use an actual Resources page is going to be, considering that the answers to many questions is never more than a Google search away. In any case, on this page I have listed several pages that I consider to be very good math help pages, either because of the concepts they explain or the tools they provide. I recommend paying them a visit to see if they can be of use to you as well!
Math Concepts Explained – this is my original math help page, and I am in the process of migrating a lot of the content over to this site. But until that move is complete, check out a lot of math tutorials here!
Math and Multimedia – another great math site that explains a variety of math topics, which also has a focus on the use of technology to help teach mathematics.
Help Teaching – all kinds of tools to help with studying or teaching, such as math worksheet generators.
Learning and Teaching Math – excellent, in-depth explanations of various math topics.