First, we need to understand the process of modeling. It is suggested to find a paper on mathematical models over the years and clarify ideas and steps.

Secondly, look at the knowledge of mathematics. The emphasis is on optimization and statistics. There is a topic about optimization almost every year.

Third, look at the related algorithms. Repeat with the second item above, of course. And use MATLAB maple to realize the following.

Fourth, learn programming knowledge, such as C++, MATLAB, lingo and so on.

Fifth, find two people who complement you and form a team. Some people focus on programming, some people focus on papers, some people focus on mathematics and so on.

Finally, good luck.