You can quickly run and interact with some code by looking at the files in the
example folder in the 3Box.js Github Repo. You run the example with the following command:
$ npm run example:start
This runs a simple server at
http://localhost:3000/ that serves the static
example/index.html file. This allows it easily interact with the MetaMask web3 provider. You can edit the
example/index.html file to try different code.