mushroom king

hi i just a bought a 1997 acura 2.2 cl and after the 3rd day that i bought it the yellow "check" light came on and i have no clue what it means. I read up on the manual and it said it indicates one of the engines transmissions control system has a problem. Everything else seems fine with the car, i mean there are no problems, its just the check light is on. whats the best thing to do in this situation? i mean i dont wanna go drivin around with the light on if its somethin serious, and plus i dont know much about cars anyway. any help is appreciated.

Thanks