What are my choices for loans?

Hey guys, I transfered over to my in-state university from a community college. I noticed that the financial aid they gave me was far less than expected -- $2,250 for a semester as a subsidized loan, and $1,000 as an unsubsidized loan. The cost of the semester will be about $6,700. I am so naive in this area, is my next step to take out a private loan? Do I take all 3 loans? I am so anxious on what to do. I dont have any money right now, I have problems paying my $300/month car insurance already (which takes all of my monthly pay). My initial plan was to work 12ish hours a week and focus on my school then graduate with my engineering degree then pay off my debts. At the very least, Ive read that I should pay monthly interest from my loans. I hope someone can give me advice as I am totally lost on what to do.