Pronunciation: (hou'tOO'), [key]
—adj., n., pl. -tos.
giving or pertaining to basic instructions and directions to the layperson on the methods for doing or making something, esp. as a hobby or for practical use: a how-to book on photography.
1. a set of step-by-step instructions for accomplishing a certain task or reaching a certain objective: a how-to for fixing a leaky faucet.
2. the basic principles or approach for doing something: the how-to of investing in the stock market.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.