Alright, first things first, you need to set up a Firebase project. Head over to the Firebase Console (console.firebase.google.com) and create a new project. Once that's done, you'll need to install Firebase Tools on your local machine. Just open up a terminal window and type npm install -g firebase-tools.

Next up, after you've got Firebase Tools installed, log into Firebase with the firebase login command. Once you're logged in, you'll need to initialize Firebase functions. Create a new directory, navigate into it in your terminal, and type firebase init functions.

Now, navigate to the functions directory that was created during initialization and open up the index.js file. This is where all your Firebase Cloud Functions will live. Here's a little sample function to get you started:

const functions = require('firebase-functions');

exports.dynamicContent = functions.https.onRequest((request, response) => {
  const dynamicData = {
    title: 'My Dynamic Content',
    description: 'This is an example of creating dynamic content with Firebase Cloud Functions.'
  };
  response.send(dynamicData);
});

This function creates an object called dynamicData with properties title and description, and sends it back when requested.

To get your function live, use the firebase deploy --only functions command in your terminal. Firebase will give you a URL for your function that you can call from anywhere. Pretty cool, right?

After deploying your function, you can call it from your application like this:

fetch('https://us-central1-<your-project-id>.cloudfunctions.net/dynamicContent')
  .then(response => response.json())
  .then(data => console.log(data));

This code fetches data from the URL that Firebase provides for your function. Once the request's promise resolves, it logs the dynamic data to the console. Don't forget to replace '<your-project-id>' with your actual Firebase project ID.

This is just a basic example. For more complex scenarios, you can use various triggers and Firebase services in combination with Firebase Cloud Functions to dynamically generate content.