### Why do package managers exist for front-end developers building web apps?
Package managers prevent coupling your code base with library code bases.
If somebody want's to work on your code they don't have to seperately install each individual library that you're using.

### What is npm and what does it allow developers to do?
Node Package Manager is an enormous software registry with over 800,000 code packages.
It allows open-source developers to share software. NPM is free to use and only requires a command line client such as Terminal

### Describe what a 'dependency' is, and the difference between a devDependency and a regular dependency. Give an example of each.
Sometimes when you install programs, they rely on other programs to work. These other programs are called dependencies.
The difference between dependencies and devDependencies, is that devDependencies are only required during development, while dependencies are also required at runtime.