Got to agree with Dave here. I presume you're in at college or university? If so, it's at this stage you should start learning fonts/typefaces. You'll need this knowledge forever.
Whenever you give presentations on anything you've designed, always state the fonts and typefaces used. It'll help big time. Obviously you choose fonts for particular reasons, so it only makes sense to tell people what you've used and why.
On a side note, here's a great movie about the Helvetica font, take a look.