It's wonderful to hear that you will be joining us here on the island of Ireland for a couple of years! A super exciting time in your life and you are most welcome. Fáilte!
There are indeed expat websites which may be of interest to you as a means of gaining information and asking specific questions. There is InterNations
and also ExpatExchange
who have information pages on Ireland that you may wish to take a look at.
With regard to specific visa information and rules, please contact your local Irish Embassy
who will be able to answer your questions regarding movements when you are here.
Have you decided where on the island of Ireland you will be relocating too?
Please feel free to ask about things to see and do during your time with us, I'm sure our fellow members and industry partners will be able to help you with some suggestions as well.