How to Gain a Following

I began twittering. After each twitter I submit, I observe what reaction I get. In my last twitter, I mentioned that I got accepted to a local College, for their CISCO CCNA certification program. I immediately got several responses from Twitter about new people now "Following" me. When I visited each of the profiles from my new followers, I noticed that most of them had some connection to CISCO. One person is selling Belkin routers. Another is offering CISCO certification seminars. Since I am interested in new certifications, at the moment, I chose to follow the seminar guy. I do not want to follow just anyone. I want TWITs that I can relate to.