How to network effectively to get a job [closed]

Question

I have been working for 5 years at the same company now. I want to go and find a new job. Finding jobs or getting interview calls has been difficult, there are have far and few. And to compound the problem I need work permit(H1b) to work.

My question is how do network with other programmers and increase my chances of getting a job/interview. And secondly how to increase my network?? thanks