Nice one for the link will have a look How do you use the carlack stuff correctly?
You simply apply it like a wax, so apply the Carlack nano cleaner to the whole car then buff off with a micro fibre cloth. There's a good write up on the Cleanyourcar website.
I would recommend claying the car before doing this. You can get a Meguiars clay kit from Halfords for around £12 and this will last two or three cars worth.
It is recommended you apply the Collinite 476 a panel at a time using a sponge pad applicator and micro fibre cloth to buff off. It's recommended you apply two coats of Collinite at least 1 hour apart and that should last most of a year on the car.