Timetables are available on-line.
Coming out of the station, go straight ahead along Station Road. Keep going straight onto Hills Road, later called Regent Street and then St. Just before Heffer's bookshop, trun left into Dwoning Street, further down called Pembroke Street. Alternatively, you can take a taxi, which will cost about 5 pounds. At the department itself you can only double-park for very short periods in the courtyard car park.