Coming to Ireland
Driving - In Ireland, you drive on the left side of the road. Check out the Road Safety Authority's website for the rules. You will need a valid EU/EEA driving licence in order to drive legally in Ireland. See Citizens Information for more on driving licences.
Drive Alive provides useful information and tips for driving in Ireland
Transport in Ireland
Transport for Ireland gives information on transport throughout the country.
Buses - The internal transport system of Ireland consists of a national network of buses, run by Bus Éireann. Regionally there are local private companies running bus services, often catering to quite rural areas.
Trains - Trains services are run by Iarnrod Éireann.
Taxis - In cities around Ireland you can easily hail a taxi on the street. In smaller towns and villages, however, taxis are not so common. You will need to get the phone number of a local provider if you wish to travel by taxi. Check Transport for Ireland for more.
*Dublin has a bus service from Dublin Bus, a tram service from Luas, and a city train service called DART. There is a bike rental scheme run by Dublin Bikes running through the city centre. You will need a credit card to sign up. You can use a bicycle at any station and leave it at another station in the city.
Temporary - Hostels are a temporary solution to your accommodation needs, if you haven't arranged something more permanent before your arrival, or if you're travelling around. Look at Independent Hostels of Ireland and Independent Holiday Hostels for your accommodation.
Short and Long term - The largest rental website in Ireland is daft.ie, which lists temporary, short term and long term apartments, houses and house-shares. You might also try GumTree's listings for the same.
Rights and Responsibilities - Be aware of your rights and responsibilities when you are renting or sharing accommodation.