Goal:
To fix a doorknob.
Answer:
Unscrew it from the door with a screwdriver and re-assemble it, ensuring the proper connections for the knob and lock if applicable are in place.

Goal:
To chop potatoes to the correct size according to how much you like them to be cooked
Answer:
If you like your potatoes overdone, chop them into small pieces, but if you like them underdone, chop them into large pieces.

Goal:
how to keep herbs from going limp
Answer:
Next time, trim the stems and put the parsley in a glass of water, fit a plastic bag over it, and stash it in the refrigerator.

Goal:
To remove paint and stain from the top of a table, you can
Answer:
Apply sandpaper to the surface of the table