What do I know about fashion buying?

From what I understand, fashion buying involves the process of fashion designing and production but from an economical and business point of view; it controls the stocks, trend forecasting, creation of customer profiles...

What should I be doing in my subject area?

I should be taking into account all of these parts of fashion buying and importing them into my Art Portfolio project.

What skills and knowledge do I need for my subject area? 

The ability to research ( for example about trend forecasting), knowledge about fashion brands and their profiles, academic writing, and many more.

What jobs can I get by studying in this subject?

Fashion buyer, fashion designer, fashion source, teacher, merchandiser planner...

If I scored myself out of ten, with ten being the highest, how well do I think I know my own subject area?

Taking into account that a less than a year ago I did not even know fashion buying existed so I would say that 3 out of 10.