Your pay slips should be enough evidence, but anyway if you wand to start from scratch.
At the moment you are a UK resident. What you will be doing is becoming an Irish resident and worker.
You go to Ireland and find accomodation. Get it in writing because you will need the evidence later.
Tenancies are registered over there,
http://www.prtb.ie/
You register to get a PPS number (equiv NI number)
http://www.welfare.ie/en/Pages/Personal ... Apply.aspx
You have to get a job or be self-employed. How many hours and for how long are a matter of dispute. Bottom figure is 5.5 hours a week for 3 months.
You cant stay in Ireland for more than 3 months if you dont have work or cant support yourself.
You collect your evidence of work and residence and return to UK.
Your husband applies for family permit
http://www.ukba.homeoffice.gov.uk/eucit ... /applying/ at the British Embassy.
Your husband does not have to join you in Ireland (Metlock case), but life would be nicer for you both if he does.