You will need to go somewhere where the sky is clear and dark to the east; basically as far from Pittsburgh as you're willing to go, maybe an hour's drive. The Laurel Ridge might be a really good place (this assumes the sky here is clear, of course). Or the amateur observatory up in Deer Lakes Park, where you'd certainly have company.
You'll also need to stay out in the dark at least twenty minutes, to let your eyes adapt to the dark. Binoculars would be a good idea; the ones with the widest lenses would be best. Comets do not shoot across the sky like meteors; like planets, they don't move visibly. Also this one might not have a tail yet, since it hasn't passed the sun yet. It should be a fuzzy ball.
To quote from the Sky and Telescope Web page:
COMET HYAKUTAKE, currently brightening daily, should become the brightest comet since Comet West in 1976. It should far outshine Comet Halley of 1985-86. Sky & Telescope magazine predicts that unless it fades very unexpectedly, Comet Hyakutake should be visible to the naked eye every clear, dark night from late March through late April for people throughout the world's north temperate latitudes.
For day-by-day instructions on finding it, and other details, see Sky and Telescope's Web page on this comet or on comets in general.