How to we implement social authentications like facebook, linkedin, google,etc

Ok. Hope its like how you say and I’ll definitely checkout the working on it. I started with linkedin to begin with, got the app id and secret key and all is looking good but still im not getting any data back from it. So I thought I might not be following the latest way of implementing it. Hence I’m here.

I’ll try to implement others first and get a basic idea then will get back to LinkedIn. Is there a github repo or something that can guide me with linkedin and give me boost as its already 3days now I’m trying to figure it out.