Your employer will train you in the use of the specific model your location has, but that training will go smoother if you are already familiar with how computers work. (thebalance.com)
It is to the point where any amount of computer work causes my right arm quite a bit of pain. (blackgirlgaming.com)
She still sits down to do any careful reading but uses a purpose - built standing desk for computer work. (canadianbusiness.com)