What does it mean when your school says they plan to disburse the net loan amount to me?

okay I received a letter in the mail from Direct Loans for my college. The letter says that the net loan amount will be disbursed to me. What does that mean? And it has to different amounts. One section says "Direct Subsidized Loan" and its says net disbursement amount $2000. The other section says "Direct Unsubsidized Loan" and it says net disbursement amount $4000. What does this mean? Is this money I'm getting or what?