Try to cash flow as much as you can. You can work and go to school, if you replace playing beer pong with a job you'll be in a lot better off at graduation, grade wise and debt wise.

Make a budget, for each month and for each semester, plan cut cost accordingly.

Used books, sometimes even the next to recent version.

Read this book for more info Debt-Free U: How I Paid for an Outstanding College Education Without Loans, Scholarships, or Mooching off My Parents 

What are the best tips for saving money as a university student?
I'm a bit confused about the difference between these two concepts. According to Wikipedia the Fermi energy and Fermi level are closely related concepts. From my understanding, the Fermi energy is the highest occupied energy level of a system in absolute zero? Is that correct? Then what's the difference between Fermi energy and Fermi level?
