You are far away from your nest.
With no clues, you aim for your own nest.

How do I get the item?
I don't know where the root vegetables are.

1. Find a grass that glows when you touch it.
2. Press "X" on the glowing grass.
3. Touch the thing you pulled out.

Item taken. But I don't know how to use it.

You have to hold the item (root vegetable) in your hand.

1. Press ENTER (START) to open the inventory screen.
2. Move the cursor over the item and press "Z" (O button).
3. Press "X" while holding the item in your hand.