I don't have an explicit problem to be answered per se, but what can I do about my signals processing course? We're only into our 4th week of school, and already my professor has had several lectures on Fourier Transforms. I am lost. Besides basic calculus, trig, and complex number theory, I didn't really know much going into this course. And he's already getting into the core of the subject matter. All of the other resources that I've taken a look at seem to introduce the Fourier Transform at least halfway into the course, once a great bit of background has been developed. My professor has not taken the time to do this, so all I see on the board is a bunch of improper integrals and special functions with little meaning. Suggestions?