ok take the wheel off,
undo the big nut on the driveshaft,
undo the 2 suspension bolts that go though the wheel hub you may have to remove the clip that holds the brake pipe to the suspension,
then move the hub down and push the driveshaft out
if the driveshaft is tight put the big nut on a few threads and give it a wack that way you wont damage the threads
now for the messy part
take off the cv joint by holding it up and tapping it from behind on the lip it should come off,
take off the old cv boot
put the clip that goes closer to the gearbox on the new boot and then slide both on together but dont crimp it yet,
use a bit of grease to centre the c clip on the driveshaft, THATS important by the way or you could mess up the joint,
then i put half to one bag of grease in the joint itself,
then out the joint on the driveshaft making sure the splines are lined up do this by turning the joint untill you feel it line up with the driveshaft,
then hoping the c clip hasnt moved hold the joint straight to the driveshaft with the big nut on the joint give it a tap it should go on and clip in, if it doesnt go in easy ish check the c clip is centred,
once its on move it around to make sure its free moving,
peel back the boot and put as much cv grease as you can in to the boot,
use the metal band to secure the boot as cable ties are useless and will come off letting the grease out,
now once the big metal band is tight and secure now you can crimp the clip closer to the gearbox,
then put it all back in the hub etc and make sure every bolt and nut it tight torque them if you have a torque wrench