Can anyone help me better comprehend Partial Differential Equations?

Ok, it’s still early in the semester but my professor has been less than helpful in keeping me up to speed with the class. I’ve got my book (A First Course in Partial Differential Equations by Weinberger) but I’m looking for another take on the material. So do any of you know any websites that explain concepts well or have any personal experience with PDE’s. Any and all input would be greatly appreciated.