If I remember its either 30A is Univeral Blvd and 31 is Kirkman Road or the other way around. Either exit will get you there. Go north on Universal or North on Kirkman to Major Blvd (BIG SIGNS directing you to Universal) - Universal is more direct but Kirkman may be faster.
My favorite way from airport is north exit past Beechline to next traffic light - Frontage Road - left - follow this road around at one point making quick left and right - do not go on Bee/Beechline when you have the chance but stay on this road and you will wind up on Sand Lake Road. SR482 - follow to Universal Blvd. Advantage is that it is about same driving time and there is shopping and fast food opportunities on this route plus a major mall. (Florida Mall).