Web design startup get clients help

So i decided to start my own web design company. I did what any good businessman would do i hit the road and asked businesses if they want a web site however, to my disappointment they either have one or don’t want one. door to door sales seems like a waste of time. Does anybody have any other ideas to get client or that has worked form them?
i have a budge of $0 dollars.

the best way would probably be word-of-mouth.