Some things you should know before moving on.

Introduction to Node.js

• What is Node.js?
• Who created Node.js?
• What JavaScript engine is used in Node.js?
• Who developed this JavaScript engine? Where did it come from?
• What API is not available to Node.js that would be in Google Chrome for example?
• Why is Node.js not a framework?

Installing Node.js

• What is the Node.js install wizard?
• What is NVM and what is it used for? Why is it useful?
• Why might you want multiple versions of Node.js installed on your machine?
• How can you check if Node.js is installed on your machine?
• How can you check if NVM is installed?
• How do you switch between versions of Node.js using NVM?

Basic Node Functionality

• What is a Node.js module?
• How do you make code publically available from a module?
• What is the difference between module.exports and exports?
• Why is it recommended to use module.exports instead of exports?
• How can you load a module into another file in Node.js?
• What happens if you leave off the file extension of a required module?
• What are the ways we can export an object from a module? Describe them.
• What are the ways we can export a function and/or constructor from a module. Describe them.
• What is a common pitfall when exporting constructor functions from Node.js modules?
• Why do you not want to instantiate a constructor with new as the value of your module.exports?
• How do you setup your module to export a constructor function and avoid the pitfall described above?
• What aspect of require causes this pitfall?

NPM

• What is NPM? What does it stand for?
• What is NPM commonly used for?
• Why is NPM important for a Node.js developer?
• How do you install packages globally with NPM? Locally?
• How do you save a package as a project dependency? A development dependency?
• How do you update a package? Remove a package? Create a package?
• What are some popular Node.js packages? Frameworks?

JSON

• What does JSON stand for?
• What is the syntax of JSON inspired by?
• What are the supported data types of JSON?
• What features of JavaScript are not supported by JSON?
• Why must you use double quotes around JSON object keys?
• What feature of require makes JSON files so easy to work with in Node.js?