Should I look at syllabi for math courses before beginning my bachelor's degree in math? Next year I'll start my bachelor's degree on mathematics, but I want to study something about it while I'm idle.
I've found this:
http://webdocs.registrar.fas.harvard.edu/courses/Mathematics.html
And this:
http://www.ufpe.br/proacad/images/cursos_ufpe/matematica_bacharelado_perfil_4904.pdf
They're syllabi from some mathematics courses, one of them is from the university near me, the other is from Harvard.
Can someone suggest a study way? Where should I start and which books I should get?
 A: I would highly recommend you get an introduction to proofs from a good book. Other computational skills and methods can be learned easily during class, but proofs require some insight and a familiarity with a new style of mathematics when transitioning from high school. Toward this end, I would recommend, as I have to many others,
"Mathematical Proofs: A Transition to Advanced Mathematics" by Gary Chartrand, Albert D. Polimeni, and Ping Zhang.
There is an entire chapter devoted to each of the following:


*

*Communicating Mathematics

*Naive Set Theory

*Logic

*Direct Proof

*Proof by Contrapositive

*Existence and Proof by Contradiction

*Mathematical Induction (and Strong Induction)

*Equivalence Relations (Equivalence Classes, Congruence Modulo n, Modular arithmetic)

*Functions (Bijective, Inverse, Permutations)

*Set Theory (up to Schroder-Bernstein Theorem and the Continuum Hypothesis)

*Number Theory

*Calculus (Limits, Infinite Series, Continuity, Differentiability)

*Group Theory (up to Isomorphic Groups)


With Three Additional Chapters online covering:


*

*Ring Theory

*Linear Algebra

*Topology


Try to get through as much of this as you can before you start university and you will be very glad that you did!
A: What I suggest you is that you have someone to guide you through your studies ; talk to your teachers and find one amongst them who understands your way and is willing to spend a little time to show you the way. What I mean by that is that this teacher should be able to ask you and understand what are your interests and give you an appropriate book to begin with. If you're lucky and that this teacher has enough patience, maybe he will help you go through some incomprehensions when you have some. 
My point is this : don't learn mathematics alone. Find people and books to do so. 
Hope that helps,
A: Firstly, I don't think that looking at syllabi is a necessary start. 
I suspect that you are getting a math degree because you either think that math is easy or fun (or perhaps both). If I presuppose that you, as an about-to-be-undergrad math student, are exactly where I was when I was about to enter undergraduate math, then I will suppose that you know calculus, trig, and elementary probability really well, you haven't really done proofs in a while or at a sufficient collegiate level, and math is both fun and easy.
Then I think you should do something you find fun. Perhaps Barbeau's Polynomials would be a great start (the reviews say it's an extension of high school math, which is true only in the sense that a high schooler should be able to pick up the book, but I would probably learn still more from it if I were to go through it again even now). It's a problem book. And if you've a good network, you can ask others when you're stumped. Being able to ask others is important.
