Comment Pick the best professor - Choose linear algebra (Score 1) 466
An engaging professor is worth a lot. A good professor can make a dull subject come alive. A boring one can do the opposite.
Also, there are many flavors of math so you might want to sample to see what suits you. I would suggest a course in "linear algebra". Linear algebra has very low prerequisites - basically arithmetic - there are no "limits" to be taken. It is very useful for almost everything technical and it offers exposure to theorem and proofs. Plus you can use Octave (or Matlab) to try out programming with vectors and matrices and get some hands-on experience with the concepts.