Being in the age of the internet, we have the luxury of YouTube. Over time, university lecturers have recorded their lectures and posted them on the internet. Nowadays, you can find lectures on most topics, including economics. In fact, there are enough uploads for someone to practically earn a degree if it were a matter of watching videos. You can even find older versions of textbooks online for free.
To fulfill an economics major at most schools, you need to have principles and intermediate courses in microeconomics and macroeconomics, a class in econometrics (sometimes split into two classes), international economics, and a bunch of topics courses of your choice. Here’s a list of videos to help you get started.