Bah its easy! Same as computer, u just take ur time go to forums and follow directions...
Oh and use the right tools! (sometimes they cost more than the parts)...lemmie see if I can find the install guide for the K&N on my car (it really is easy)....oil changes, brakes, intake (even some exahust), are all pretty easy
Good luck Dave with ur license, i've heard it's A LOT tougher to get ur license in Europe