Boneyard is north of Kiama. Its a bit overrated but can be great - needs clean east swell and south wind. Its also tide dependant. Jones and Bombo beaches are good options either side of Boneyard. Werri as well as others have said.
Down south try to get to the swell magnet Bendalong - worth the drive. Also in the area in Manyana and Green Island (needs NE wind not south as stated before) and some nice reefs if you sniff around.
The Farm is great but gets crowded with bogans from Shellharbour.
The South Coast is great for surf but its a complex coastline that takes a while to work out.