Its easy mate, to do the rears you pop your boot and theres a little knob inside level with your rear lights. Unscrew that and pop your clusters off then theres 4 little bits of plastic, gently prize them open and voila replace bulbs.
Fronts are a little more fiddly to get to but still easy. Pop your bonnet and put your hand inside, just level with the indicator bulb, twist it and pull out. Jobs a gooden.
Side lights are a bit of a barstool to get to, you have to pull off a rubber bit and i found it easier to take your low beam (I think) bulb out so you can get to the side light bulb. I found if you just gently pull on the 2 wires that go into the back of the connector and wiggle it came out easier than actually trying to grab the connector itself.
I kept the old bulbs as replacements.
PS : Don't forget to put the rubber bit back on otherwise your headlights will start to mist up.
Hope this helps fella.