Will these courses help

Very few courses are relevant to IB experience, imo...everything can be learned on the job (this is coming from someone who took zero finance courses in college). What will help, however, is learning how to think critically, attention to detail, and the ability to research effectively (i.e. google well). IB doesn't require lots of fancy math or economics/econometrics, but understanding how economies function and being able to work with numbers helps.

I would say take the courses you are interested in, because once you start IB you won't have much time to study new things.

All they do is to demonstrate your interest in finance. Like anaismalcom says, very few courses are relevant to IB experience.

I would say accounting classes are the most useful to prep for your interviews.

Can you do more programming? Wish I had done more of that.

I agree take the programming

Thanks for the replies, just one question related to programming, I just have 2 more years left, so I wont be able to take that many courses in it, just a handful. My plan is to take an intro course this year, and 1 or 2 courses in C language in my final year. But do they use C?