The accepted commands are: insertOne() or insertMany()

db.mycol.insertOne({
_id: ObjectId(7df78ad8902c),
title: 'MongoDB Overview', 
description: 'MongoDB is no sql database',
by: 'tutorials point',
url: 'http://www.tutorialspoint.com',
tags: ['mongodb', 'database', 'NoSQL'],
likes: 100

})