Hi everybody. Congratulations for such a great forum. I've been reading some posts related to my question and I've found really good stuff. The point is: I'm studying with Khan Academy with the idea of trying to go to University to graduate in Math. After Khan Academy, how should I continue? I guess textbooks are the better options, but there are quite a few. By the way, I'm 31. Many of you say it is never too late, which is quite encouraging. Cheers.