how to maintain a mercedes?
i am a newbie and i dont know how to mainttain a merc or even a car...

what do i have to do besides following the scheduled service?
what does the service a and B do?
only change of oil,brake fluids and stuff right?

but what about engine tune-up, changing brake pads and etc.,..?
its not covered in the service a and b right?
i have to do this myself?
if yes when should i do engine tune-up every 5000 miles?

any help will be much appreciated
thanks