Making social media sites with java script and Node Js, any tips?

So my advice is that depending on the type of social media sights you are trying to make there is going to be a bit more involved than just using node js and javascript. You will want to take a look at things like express js after you learn node js for the library. You will also want to learn about mongoose or use mongo db from scratch for the data base handling. You will also want to learn about using middle were such as express-sessions to store user data and for login auth if you want to do it from scratch. like have here https://github.com/gwartney21/Node_Js_User_Login or you can use a libary like pass port that handles several different versions of authentication. Also if you want to add in things like file uploading for users to post photos ect you will want to learn how to use the middle wear multer. I would say this really scratching the surface depending on what exactly you are looking to build but hopefully this gets you pointed in the right direction. Also if you add in chat applications check out socket.io