It's very easy, wheel off, two clips that hold retaiining pins in, hold one side of the retaining spring plate and push one of the pins out, remove silver spring plate, other pin out. Open fluid reservoir with rags around to catch any fluid over-spill. Push pistons back if required to remove old pads, new pads with slither of copper grease on the back and edges, put them in, replace one pin, spring plate back in, other pin, put the two clips in and job done.
That's is the basic procedure for the brembo's