I suggest: 1, it must be good to have a mathematical foundation. 2. Read more master's mathematics, such as the best choice, and master's mathematics can only be said. 3. Look at the examples of mathematical modeling, summarize the ideas of solving problems and learn the format. 4. Learn a computer language. 5, learn some software, such as Mathematica, Matlab, Lindo, Lingo, the most commonly used is Matlab.