For easyLand just walk out of the terminal and you'll see it - big orange building beside the short term car park.
For the Academy (assesment days/training/etc) just hop on a long term car park bus (pink signs) and ask the driver to drop you off outside the Academy. To drive, turn up the hill at the roundabout outside the Holiday Inn following the signs for Car Hire. Follow the road past the fuel depot and the Alpha warehouse and turn right at the next roundabout. Turn left before the Flying Club and the Academy is straight on to the left.