get all restaurants :
db.restaurants.find({})

limit and sort :
db.restaurants.find({},{name:1}).sort({name:1}).limit(10)

get by id :
var aRestaurant = db.restaurants.findOne({},{id:1})._id
db.restaurants.find({_id: aRestaurant})

get by value :
db.restaurants.find({borough: "Queens"})

count :
db.restaurants.count()

count by nested value :11206 document.address.zipcode
db.restaurants.count({"address.zipcode":"11206"})

delete one :
var deletedObjectedId = db.restaurants.findOne({},{id:1})._id
db.restaurants.deleteOne({"_id": deletedObjectId})

update one:
var ObjectId = db.restaurants.findOne({},{_id:1})._id
db.restaurants.updateOne({_id:ObjectId},{$set:{name:"Bizz Bar Bang"}})

update many:
db.restaurants.updateMany({"address.zipcode":"10035"},{$set:{"address.zipcode":"10036"}})