How to Get Sarkari (Govt) Jobs?

I am a Computer Engineer. I studied engineering from a reputed institute. Now, I am looking for stable career in my own field. I find it is hard to get Sarkari ( Govt ) Jobs in my field. I don't want to join pvt sector. I want to know how can I apply for various Sarkari jobs in India and abroad. I find some portals which gives new openings and also some give tips and tricks to apply for Sarkari jobs.

I am collecting more tips and tricks in this process.