Tools: Philips and straing screw drivers.
string: why to loop tight around pipes and cables so if they drop behind the sink and not accessable you have the string to pull them back.
The hard bit is if no 'lift play' getting at the pipe retaining jubilee clips and microswitch wire.
Release the jubilee clips on each pipe if they have them. Warm the pipes in turn with hair dryer full heat to soften pipe and aid removal. Remove microswitch wire if they have them.
As for the tap assembly fixing on the work top usually 4 screws under screw caps one on each corner. Release them and llift tap clear fit new tap. Warn you it's a bugger of a job it's easier to do a cartwheel. Why! its a bad design the fitt the tap draw pipe down to firt fitting not thinking about owners being able to lift the taps clear to work from above unit. 2yr old could design better. Quite a few are Whale taps. But Caratech is right as fitting to suface of sink unit differ not much but do.
Bob
June 2011