Couldn't be simpler. Dump a small carton of cold (fresh from the fridge) heavy whipping cream into an appropriately sized bowl, glass preferably. Whip using a hand mixer (best) until soft peaks form. Done! Suppose you could use a whisk if you are really energetic.
Works best if bowl and cream are both cold. Bit of sweetener or flavouring can be added when you are done. Fold them in gently to not wreck the structure of the whipped cream. Few drops of vanilla is nice, bit of stevia. Maple syrup is divine!!