I tried the first one "It's easy, just enter db.getCollectionNames();" Received: "undefined method `collection_names' for nil:NilClass" Edit: It's relying on

I tried the first one "It's easy, just enter db.getCollectionNames();" Received: "undefined method `collection_names' for nil:NilClass" Edit: It's relying on my cookie which wasn't enabled, oops. The official MongoDB interactive tutorial: http://try.mongodb.org/ http://try.mongodb.org/ Seems to be a clone of redis: http://try.redis-db.com/ http://try.redis-db.com/