Welcome to the Breeze.
You have 3 kite stores in your surrounding areas, Kitepower at Clontarf, Briskites at Brighton and Surfconnect at Sandgate. They all offer lessons and will all be able to advise you what equipment to get set up with.
If you want to head north to the Sunny Coast I think Kite Thrills offer free lessons, but you have to buy your equipment up front and then they teach you to use it.
Google is your best friend when doing research. Good luck.
Personally I would go with Ryhs at Kitepower, awesome instructor!
Might see you out there.