It's very straight forward. But you'll need a bearing splitter and pullers. You can pick them up from machine mart for about £30. Fit splitter behind large spline, attatch pullers and umm............pull. (by screwing in the centre screw)
There is a how to on here somewhere do a search and you should get pictures too, to make it easier. Good luck

P.s, you may have to remove indicator arm and the plastic cover of the steering column to get the splitter to fit.