You can store unpeeled ginger for three months in the freezer. But before you peel it, allow it to thaw.
Choose a grater having fine etched holes and a large surface area, and it will make your work easier.
Do not pick a grater with metal teeth or nubs as they consume more time and are inefficient.
If your grater gets clogged, using a sponge, rub the ginger residue after running the grater under warm water.
Avoid or be careful while using small pieces of ginger while grating, as you can have accidental cuts while grating.
To have even shreds of ginger, apply even pressure when you are grating the ginger. I prefer to make short motions while rubbing the ginger on the grater.