Don't bother learning too much. Focus on being a doctor and then pay a financial advisor to do the work for you. It will save you time and lots and lots of money.

If you dont know what you are doing you will lose money. Dont say you weren't warned.

Baby sitting is the most common way.

Do online jobs like Data entry jobs...

very slowly and at very low rates

have students come to you for tutoring. advertise.