If you are coming from the airport get on the X95 bus and head to the Symagore Square. It is the stop that everyone gets off on.
Also once you get there check out the sites first then head to the store. Many of the sites, temples, ruins, close by 3pm! Possibly during the summer they are open later, but not in April. I recommend going to the museum later in the day as it closes at 8pm. If you are a student bring your id because you get in free.
Great place! Much better than a hostel!