A tough one Matt. Choose the height you want and draw a line with a spirit level. Offer the sink up to the line and get someone to mark the screw holes through the sink which can be found at the bottom. drill the holes with a 5mm wood bit. Insert wurly fixings into the holes (these are known as metal plasterboard fixings at the builders merchants). squirt white silicone onto the back of the sink and place onto wall. Screw through the holes in the sink and silicone carefully around the sink. Leave for couple of hours and plumb in the water. Job done. Hope this helps. Leo.