It's easy bud, this was my first ever car job, is the rad leaking, if so check the stat or whatever it is in the bottom right corner as you look at it, i bought a new rad, but it was this that leaking!
From memory, drain it down, unplug all the plugs, then on top there are two brackets, undo these bolts. mine snapped on one of them so be careful, no biggy if they do snap though just a trip to b&q, then take off hoses, then pull it out. Pretty sure thats all that is invlolved.