Put a day's serving of 3 to 4 tbsp. of the whole seed in the container of a coffee or spice grinder. Put the lid on the grinder. Plug in the grinder to an electrical outlet. Press down on the lid to activate the grinding, or push the "on" button, depending on the model.
Pulse the grinding by turning the switch on and off or by releasing the lid and pushing down again. The flaxseed should be ground within 10 seconds.
Empty the ground flaxseed into a zip locking bag.
Unplug the grinder. Remove the lid. Wipe out the lid and inside the grinder.