If you are fitting them as they are ie with springs fitted, then is a straight forward exchange for your own if the springs are to be changed then is slightly more difficult and time consuming.
To just change the struts complete, remove 2 x 19mm bolts at the bottom, brake pipe and abs sensor wire then the 3 small nuts at the top and it will come off , but sometimes the bottom 2 can be a pain to remove and remember to mark the these bolts and get them back to as close as possible they affect the tracking/alignment which you should really have done after it anyway
So get you spanners out and get to it