Most comprehensive "How-to" site I've seen

eHow.com is by far the most extensive "how to" manual site I've come across. The site was started in 1999 and is fully categorized as well as searchable.

I entered a quick search using the keyword "dog" and got over 3,700 how-to's back. The first page results ranged from straightforward advice like "How to Give a Small Dog a Bath" to a little more out of the ordinary like "How to Treat Your Dog's Separation Anxiety."

What's also cool about eHow is that they've jumped on the Wiki bandwagon by starting wikiHow back in January.

"wikiHow is collaborative writing project to build the world's largest how-to manual. With your contributions, we can create a free resource that helps people by offering clear, concise solutions to the problems of everyday life. wikiHow currently contains 3755 articles written, edited, and maintained primarily by volunteers."

So just like Wikipedia, any user can modify or add to any how to manual.

Check it out.