What is npm in Java, how do I get started with it. What should I download ?
NPM is a package manager for Node.js, which allows to download packages and libraries from npm.js. If you are looking for similarities, then there is `pip` for python. To get started with NPM, you have to download Node.js, and choose to install npm. 

Now, when you successfully installed NPM, you can use it to download packages!
Here is how:

```bash
npm install [package-name]
```

This would install any package you want! Just make sure to replace [package-name] with something real.