Coilover adjustment is easy
Front - you have to take the wheel off, use the C spanners on the two lock rings located below the springs - turn the spanners in either direction to snap the lock and then adjust accordingly but spinning the lock rings further down or up!
Rear - remove the lower bolt at the bottom of each shock, this will drop the rear arms down and you should then be able to remove the rear springs - at the bottom of the spring is the lowering bolt - just turn this accordingly to a desired height and thats it - put it back in and then put the bolt back into the shock!
Make sure you measure accurately the distances you go in the coilovers to make the car even!