Bulbs or housings? Bulbs are easy - have a look in the owner's manual for how.

For the housings, the trim in front has to be removed, then under the rubbers are fixing screws to remove, then it just comes away and you can unplug the harness. Have a search ... there's a few pictorials on the web.

... just had a thought ... is this the facelift model? ... in which case the bumper has to come off ...

Mmmm, I hope it was just the bulbs you needed to do
Rod