According to what you wish to educate them. You must keep in mind who you are speaking of. When trying to teach somebody about whatever it is you are trying to teach them, walk with easy so as not to harm their feelings. The said person may not be able to grasp readily or may not be able to do what you want to teach them. Never lose your temper and insult this individual or claim you are incapable of learning. Everyone has the capacity to learn, even if they suffer from a condition that makes them go more slowly than others.
Thanks,
Eddie