So is there a preferred formatting? Are bullets the way to go, or lists? I'm trying to figure how to do this the best, because I don't really have a very impressive resume so at least I want it to look really good.
There isn't really a "preferred" formatting. Bullets are fine, as are lists. The biggest thing to keep in mind is that it should be concise (no 5-page CVs--stick to a 1- to 2-page limit), and easy to read (which by default is typically a bulleted list that is left-justified). You'll notice those two traits are in all three Harvard sample résumés.