First off, congrats on your decision to go to school. Secondly, as far as the classes, I would take the advice of your advisor, however, I would have thought that you would be concentrating on pre-reqs for your LPN since you are taking that route first then later take RN prereqs but I'm not an advisor and don't know your school.
Thirdly, as far as paying for school. You will have to fill out a FAFSA, which will tell you how much money the government will grant you for your education. That form is based on income from your parents since you are living at home etc. http://www.fafsa.ed.gov/
There is the website for that. It is a mandatory form that is the first step for pretty much any and all financial aid
Your financial aid advisor should be able to direct you to student loans. I'm currently using Stafford loans which do not base on credit score and you are not responsible for any interest accruing while you are in school. Oh and btw, I'm going to a community college to get my Associates Degree in Nursing so, yes, there is aid out there for cc and adn. Check with your financial aid office, they are a wealth of information and may even be able to point you in a direction that you didn't think of. That's their job and what they are there for.
Good Luck to you!!