You need a board and a paddle.
Heaps to choose from, DJ will say Naish, Greeny will say Starboard 11 2 (which I think is their worst board getting a 9 8 for the wife, really), Boardbumps will say his, everyone has a barrow heres mine for what it is worth.
Contact Jason at West Oz Kiteboarding
www.westozkiteboarding.com.au/ he does Starboard, Mistral and Jimmy Lewis SUP's. Has demos and gives lessons/tours Safety Bay good flat water to start. I am sure he will look after you.
Cheers Andrew