Today I planted one long row of garlic. There are about 40 cloves planted. First you clean your garlic. Mine has been hanging in the shed for a few months and is a hard neck garlic. I cut the stems about 2-3" from the cloves. I then trim the roots and rub any little dirt lumps off. Then I pull off the dirty outer layer of skin leaving a lovely white clean garlic. You must leave some skins on to keep them dry and clean in storage. I then take the biggest and best cloves and replant. I have a full planting guide here.
I sat in the garden to clean garlic. Left the white skins lying there to break down and moved the stalks to compost. Very satisfying.