Swiveling the hand, on the axis from the elbow, aside the face in an upright position, palm toward one's cheek, means "lekker*" "delicious."
A sharp upnod of the head means "what's up?" It's mildly rude and moderately confrontational. It's not aggressive, though naturally. It's informal, though.
Passing the hand across from a side of the forehead and meanwhile drawing the fingers from open to close-tipped out beside one's head means "whew." It's an expression of "muchness."
Kisses Between a man and a woman, or between two women, it is common amongst the well-aquainted to plant three soft kisses upon alternating cheeks. Left, right, left.