I have put the pics up in high resolution. You may have to go to the bottom of the thread & scroll from side-to-side to see the full image
First start by jacking up & supporting the car on stands. Then remove the wheels (If you can't manage this without a guide, should you be attempting the brakes?)
Front brakes.
Start by loosening the 2 Torx screws that hold the disc onto the hub (see pic 4) You can have an assistant apply the brakes to stop disc from turning. Dont do this if you are only changing pads.
If you look at the caliper, you will see that there is a piston on the back side only. The caliper is free to slide on "pins" that are protected by rubber boots. The caliper fixing bolts, top & bottom, screw into them (see pic below)
Jamb a large screwdriver in the the slot in the caliper at the end nearest the wheel and furthest from the piston and lever the caliper towards you, ie away from the suspension strut and it will slide along the pins to allow play in the pads.
Then remove the top and bottom bolts to and remove the caliper.

Next lever out the old pads.
If you are only changing pads then simply put the new ones in and push back the caliper piston and replace caliper (see pic 5)

In order to get the discs off, you must remove these 2 torx bolts and remove the caliper carrier.

Then remove the Torx bolts that hold the disc on and bash the disc off from behind using a large copper/wood/plasic mallet. They are usually a bit rusted on so some effort needed.

Compare the new discs with the old to make sure the bolt holes are the same, that it's the same diameter, and that it's the same thickness (allowing for wear of course)
Refit new discs to hubs and loosly fix with the 2 torx screws. Refit caliper carrier and use loctite or similar threadlock on the bolts. Do them up tight.
Next place pads in the caliper carrier in the reverse manner to how you removed them. Make sure the "ears" engage in the spring clips properly.
Next force the caliper piston back in the housing using a "G" clamp, sash clamp or similar, and refit caliper back onto caliper carrier with the 2 bolts top & bottom making sure brake hose isn't twisted. Tighted the 2 torx screws holding on the discs (apply brakes if need be)

Should look like this.

Refit wheels and pump brake pedal untill pedal goes hard before attempting to drive car.
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