You need to find out if you can get free money such as a grant or scholarship, or if you will need a loan.
what do I do next if I need that loan?
Decide what aid you really need, and then respond to the school’s aid offer within the deadline set by the school.
Do I get the school money in a check or debit card?
Have you been offered financial aid that you accepted?
yes, I will get help
The financial aid staff at your college will explain exactly how and when your aid will be paid out.  If you are receiving a federal student loan for the first time you should expect to be required to sign a promissory note and go through entrance counseling
Yes, of course. Now I have to inquire about renewal. After logging in to fafsa.gov, what should I do?
You have to select FAFSA Renewal. If you do it through the app then the FAFSA renewal form should display automatically if you are eligible for renewal.
just to be sure, to log in to fafsa.gov I should use my FSA ID, right?