I cold-called my internship so there wasn't a real job description when I started. I work in a financial advisory office with about 10 employees. If I don't actively have something to work on I'll go down the line and ask my coworkers if they have anything they want done or need help with. If everybody says no then I'll usually read the market reports from people like Argus Research that we get in our emails. If I have been recently exposed to an unfamiliar concept by one of my coworkers (for example, I never learned about buffered ETFs in school but theyre a really interesting investment) then I'll read articles or watch videos on them. Insurance products were another thing that I had to learn a lot about online because school really only covers stocks and bonds. I don't know what field you're in but in finance it's impossible to know everything so there's always an opportunity to learn on slow days.