I have 64k in mostly assets in a brokerage account, and a 400 ish monthly revenue.

This came from an inheritance account I only just recently got around logging into.

I'm gonna be going to a community college and a 4 year, then either pursue some kind of medical doctorate or maybe cybersecurity for an idea of possible schooling expenses, nearly half is in some indexes and the other half is in various single stocks like Bank of america and citigroup primarily.

My knowledge of these things is pretty basic, I've taken a macroecon class and a business class and thats about it. My plan as of now is to prioritize indexes but I want help figuring out how to choose some smaller, riskier investments for short term (Along with generally what to do it); I'm also wondering what other things may be possible in terms of turning this money into revenue if there are other options.