moving to Dublin for an egyptian girl

Hi All,
I will move to dublin next month as I got a job offer there,I am from egypt & 29 yrs old single.I have some questions that am worried abt, Is it safe? Is the city expensive? Is there any racial discrimination? How is the night life? Is there a good travel network around? How long it takes from wesport to dublin by train?

Waiting ur replies,
Summer