You know you need to pick typefaces that will work well together, but it seems like there’s a lot more to it than meets the eye, and you don’t have a year to get up to speed on the ins and outs of typography.
Relax! You don’t need to know all the rules. A few simple guidelines and basic type knowledge will have you making great type choices in no time.
If I can get away with it, I tend to opt for a single font family in my designs. I’m not sure if that’s because I’m terrible at pairing fonts, or because I’m indecisive, or because I just prefer the simplicity/minimalism of a single font. Anyhow, this is a nice guide to font pairing.