Current Sophomore trying to understand more

Hi everyone,

I am currently a sophomore at a non-target who had is looking for more clarification on accounting principles before I start my first-round interviews. Before I get called an idiot, I want to explain my past experience, I had a finance-related internship this summer, part of my school's investment club, in the Tamid group, and in a program that pairs me with a senior that is going into the financial services industry and with an analyst on Wall Street at a BB. 

That being said, I am looking for resources on the internet that will give me a deeper understanding of analyzing the financial statements. I know most things on the statements, however, I want to truly know how to conduct analysis and what I should be looking for when I am comparing cash flow statements from two different years. I would appreciate all pointers and tips on where I could find these resources.