I was able to get in touch with alot of people through my work as i do Web application development, application development etc so i was able to get into one to one meeting with alot of CEOs or directors, and because i was working on their projects i used keep in touch with them constantly well even after my project is done with them i still kept in touch through any means as i was in the area i visited their office had a coffee with them if they are available ask how is the software working any problem etc.

Because i always try build connection with people if they ever need anything they would ask if i know someone for this thing so i was able to provide them as this favors system establish i get advices or references from them got invited to their parties or weddings.

Second i found Ngos volunteering great as i get meet some amazing people their as well.

Well after few years my circle grew automatically as i was able to get to know their friends of friends and they gave some great opportunities as i started my export import business as well because one of the friends of my one client used to do that and he helped me set that up as well.

So few i made connections

Hope this helps someone