Interview for family support worker!!! Any advise?

[stressed]

Hi there, dont know about anyone eles but ive gone realy quiet at the moment only got one mindee so ive had to apply for some jobs and got a letter back to day asking me to go for an interview its casual so i will hopefully work it arond my minding. anyway its for a family support worker, im realy nervous as i havent had interview in ages as any one got any advise or ideas about what they might ask at the interview