I am an unemployed/full time medical student and rely on fin. aid loans to pay for tuition and expenses. Would I be eligible to get tax credits, despite having no income?

My entire tuition and all other related educational expenses are paid for via loans, which are currently accumulating mind boggling amounts of interest. I do not have a job and therefore have zero income. I wasn't sure if there was a point to filing taxes and now am worried that I have been missing out on any benefits.