rears are handy u dont even have to take the door panel off just remove the sail panel and pull the rubber out make sure u dont bend it cos they dont straighten very well.
for the fronts remove the door panel and unscrew the mirror you should again be able to pull the trim out of place. when puttin in the new trim you should really drop the window winder out of its place and fit it in. you can do it with the winder in place but its fiddly.once seated in refit ur winder and rebuild your door up. make sure u try ur windows first though to make sure the seal isnt snagin. hope this helps