I am a 20 year old female student planning a trip to Cork to visit a friend who is studying abroad. I will fly into Dublin on March 3rd and fly out on March 11. I plan on spending 1 or 2 days in Dublin including the night before my departure. During my stay I plan on making trips out of Cork by bus or train to various sites, possibly alone. I would like to keep the trips to a single day because I have free lodging in Cork. With the limited time and money that I have as a college student I am wondering which towns/castles/ruins would be worth it for me to visit as well as any advice for a someone traveling alone for the first time. I am also finding myself confused with train and bus websites so any advice there would be welcome, is it better to buy a pass or buy each ticket as I go?