Okay, let's start building a basic, light CRM application. We'll use Node.js with Express for the backend API and simple HTML, CSS, and JavaScript for the frontend. This initial version will allow adding and viewing contacts.

Next steps:

1. Run npm install in the terminal to install Express.
2. Run npm start to start the server.
3. Open the provided preview link in your browser.

You should see the basic CRM interface where you can add contacts and view the list. The data will be saved in the data/contacts.json file.