I signed up for Twitter in July 2007 but didn;t really start using it until September... and that was largely because of a posting here at randsinrepose. :-) In fact, my first tweet (according to myfirsttweet.com) was

Reading back issues of randsinrepose.com 2007-09-11 22:44:16

How did II find people to follow? I started with @rands, clicked open all of the people he followed (or who followed him) looked at what they were saying. If they were of interest to me, I added them, then went out another ring, clicking on who they read and who read them. And again.

I'm not the busiest voice on Twitter but I've posted 1200 updates and now follow over 300 people. I knew some of them before Twitter; I've met some in person since Twitter; I know many only through Twitter.

Be patient. Let it grow.