AkunaCapital Trading Intern - Mental Math Test and Interview Process

I read the thread for the Junior Trader role on WSO, but I was wondering if the internship process was any different. This would be my first markets interview (yay!) and I don't know what to expect.

I saw that TraderTest and Zetamac are good resources to get prepared. I also haven't even taken a stats class yet, I'm a freshman graduating early, so is there anything specifically stats-related that I should look at? Or any finance-related subjects that I should study?

Also in regards to Akuna and other firms, what are some tips you have for interviewing and networking?